A+B Problem (0 + EOL)

本文介绍了一个简单的C++程序,该程序使用循环结构连续读取两个整数并输出它们的和,直到输入结束。代码展示了如何结合使用C++的iostream和C语言的puts函数来实现友好的输出格式。
部署运行你感兴趣的模型镜像

代码:

#include <iostream>
#include <cstdio>             
using namespace std;
int main()
{
    int a,b;
    int c =0;
    while(cin>>a>>b && (a||b))
    {
        if(c > 0)puts("");
        c++;
        cout<<a + b<<endl;
    }
    return 0;
}

这里puts是C函数,puts()函数用来向标准输出设备写字符串并换行,等效:printf("%s\n",s),前提:s是C风格字符串,最后以'\0'结尾。

留个坑,我觉得这代码出来的格式还是有问题啊。。。。

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下面是我按照你的思路执行指令后终端打印的结果(base) casbot@casbot:~/ros_catkin_ws$ # 备份原文件 sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak # 使用清华源(Ubuntu 22.04) sudo sed -i 's@//.*archive.ubuntu.com@//mirrors.tuna.tsinghua.edu.cn@g' /etc/apt/sources.list sudo apt update && sudo apt upgrade -y Ign:1 http://deb.repo.autolabor.com.cn jammy InRelease Ign:2 http://deb.repo.autolabor.com.cn jammy Release Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Hit:5 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy InRelease Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Hit:7 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates InRelease Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Hit:8 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-backports InRelease Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Hit:9 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-security InRelease Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Get:10 http://mirrors.tuna.tsinghua.edu.cn/ros2/ubuntu jammy InRelease [4682 B] Hit:11 http://packages.ros.org/ros/ubuntu focal InRelease Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Hit:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:6 http://deb.repo.autolabor.com.cn jammy/main Translation-en Fetched 4682 B in 3s (1850 B/s) Reading package lists... Done Building dependency tree... Done Reading state information... Done 80 packages can be upgraded. Run 'apt list --upgradable' to see them. Reading package lists... Done Building dependency tree... Done Reading state information... Done Calculating upgrade... Done Get more security updates through Ubuntu Pro with 'esm-apps' enabled: exo-utils libzvbi-common libzbar0 libheif1 libiperf0 libmujs1 libavdevice58 ffmpeg libopenexr25 libpostproc55 libmagickcore-6.q16-6-extra libavcodec58 libgstreamer-plugins-bad1.0-0 iperf3 libmagickwand-6.q16-6 libavutil56 libswscale5 libmagickcore-6.q16-6 libexo-2-0 libgsl27 gir1.2-gst-plugins-bad-1.0 libswresample3 imagemagick-6-common libavformat58 libzvbi0 gstreamer1.0-plugins-bad libgslcblas0 libde265-0 libexo-common libavfilter7 Learn more about Ubuntu Pro at https://ubuntu.com/pro The following NEW packages will be installed: libxcvt-dev The following packages have been kept back: dvb-tools ir-keytable libdvbv5-0 libdvbv5-dev libv4l-0 libv4l-dev libv4l2rds0 libv4lconvert0 qv4l2 v4l-utils xserver-common xserver-xorg-core xserver-xorg-legacy The following packages will be upgraded: apport ghostscript ghostscript-x gir1.2-javascriptcoregtk-4.0 gir1.2-soup-2.4 gir1.2-webkit2-4.0 git git-man libarchive13 libblockdev-crypto2 libblockdev-fs2 libblockdev-loop2 libblockdev-part-err2 libblockdev-part2 libblockdev-swap2 libblockdev-utils2 libblockdev2 libdjvulibre-text libdjvulibre21 libdvbv5-doc libgnutls30 libgs9 libgs9-common libjavascriptcoregtk-4.0-18 libnss-systemd libpam-modules libpam-modules-bin libpam-runtime libpam-systemd libpam0g libprotobuf23 libpython3.10 libpython3.10-dev libpython3.10-minimal libpython3.10-stdlib libre2-9 libsoup-gnome2.4-1 libsoup2.4-1 libsoup2.4-common libssh-4 libssh-gcrypt-4 libsystemd0 libudev1 libudisks2-0 libvpx7 libwebkit2gtk-4.0-37 libxslt1.1 linux-libc-dev python3-apport python3-pip python3-problem-report python3-protobuf python3-requests python3-urllib3 python3.10 python3.10-dev python3.10-minimal sudo systemd systemd-sysv ubuntu-advantage-tools ubuntu-pro-client ubuntu-pro-client-l10n udev udisks2 xserver-xorg-dev xwayland 67 upgraded, 1 newly installed, 0 to remove and 13 not upgraded. 62 standard LTS security updates Need to get 77.1 MB of archives. After this operation, 64.5 kB of additional disk space will be used. Get:1 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpam0g arm64 1.4.0-11ubuntu2.6 [59.7 kB] Get:2 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpam-modules-bin arm64 1.4.0-11ubuntu2.6 [38.6 kB] Get:3 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpam-modules arm64 1.4.0-11ubuntu2.6 [279 kB] Get:4 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libnss-systemd arm64 249.11-0ubuntu3.16 [133 kB] Get:5 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libsystemd0 arm64 249.11-0ubuntu3.16 [314 kB] Get:6 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 systemd-sysv arm64 249.11-0ubuntu3.16 [10.5 kB] Get:7 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpam-systemd arm64 249.11-0ubuntu3.16 [205 kB] Get:8 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 systemd arm64 249.11-0ubuntu3.16 [4423 kB] Get:9 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 udev arm64 249.11-0ubuntu3.16 [1541 kB] Get:10 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libudev1 arm64 249.11-0ubuntu3.16 [74.5 kB] Get:11 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpam-runtime all 1.4.0-11ubuntu2.6 [40.2 kB] Get:12 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libgnutls30 arm64 3.7.3-4ubuntu1.7 [922 kB] Get:13 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3.10-dev arm64 3.10.12-1~22.04.10 [508 kB] Get:14 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpython3.10-dev arm64 3.10.12-1~22.04.10 [4666 kB] Get:15 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpython3.10 arm64 3.10.12-1~22.04.10 [1885 kB] Get:16 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3.10 arm64 3.10.12-1~22.04.10 [508 kB] Get:17 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpython3.10-stdlib arm64 3.10.12-1~22.04.10 [1846 kB] Get:18 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3.10-minimal arm64 3.10.12-1~22.04.10 [2260 kB] Get:19 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libpython3.10-minimal arm64 3.10.12-1~22.04.10 [812 kB] Get:20 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 sudo arm64 1.9.9-1ubuntu2.5 [807 kB] Get:21 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 ubuntu-pro-client-l10n arm64 36ubuntu0~22.04 [20.6 kB] Get:22 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 ubuntu-pro-client arm64 36ubuntu0~22.04 [236 kB] Get:23 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 ubuntu-advantage-tools all 36ubuntu0~22.04 [10.9 kB] Get:24 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3-problem-report all 2.20.11-0ubuntu82.9 [11.4 kB] Get:25 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3-apport all 2.20.11-0ubuntu82.9 [89.0 kB] Get:26 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 apport all 2.20.11-0ubuntu82.9 [135 kB] Get:27 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 ghostscript-x arm64 9.55.0~dfsg1-0ubuntu5.12 [48.0 kB] Get:28 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 ghostscript arm64 9.55.0~dfsg1-0ubuntu5.12 [49.7 kB] Get:29 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libgs9 arm64 9.55.0~dfsg1-0ubuntu5.12 [4956 kB] Get:30 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libgs9-common all 9.55.0~dfsg1-0ubuntu5.12 [753 kB] Get:31 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 gir1.2-webkit2-4.0 arm64 2.48.3-0ubuntu0.22.04.1 [105 kB] Get:32 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 gir1.2-javascriptcoregtk-4.0 arm64 2.48.3-0ubuntu0.22.04.1 [39.0 kB] Get:33 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libwebkit2gtk-4.0-37 arm64 2.48.3-0ubuntu0.22.04.1 [26.2 MB] Get:34 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libjavascriptcoregtk-4.0-18 arm64 2.48.3-0ubuntu0.22.04.1 [8729 kB] Get:35 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 gir1.2-soup-2.4 arm64 2.74.2-3ubuntu0.6 [31.8 kB] Get:36 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libsoup-gnome2.4-1 arm64 2.74.2-3ubuntu0.6 [6194 B] Get:37 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libsoup2.4-common all 2.74.2-3ubuntu0.6 [4778 B] Get:38 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libsoup2.4-1 arm64 2.74.2-3ubuntu0.6 [281 kB] Get:39 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libxslt1.1 arm64 1.1.34-4ubuntu0.22.04.4 [161 kB] Get:40 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 git-man all 1:2.34.1-1ubuntu1.15 [955 kB] Get:41 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 git arm64 1:2.34.1-1ubuntu1.15 [3224 kB] Get:42 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libarchive13 arm64 3.6.0-1ubuntu1.5 [367 kB] Get:43 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-utils2 arm64 2.26-1ubuntu0.1 [15.5 kB] Get:44 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-crypto2 arm64 2.26-1ubuntu0.1 [17.3 kB] Get:45 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-part-err2 arm64 2.26-1ubuntu0.1 [5650 B] Get:46 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-fs2 arm64 2.26-1ubuntu0.1 [21.5 kB] Get:47 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-loop2 arm64 2.26-1ubuntu0.1 [6838 B] Get:48 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-part2 arm64 2.26-1ubuntu0.1 [15.0 kB] Get:49 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev-swap2 arm64 2.26-1ubuntu0.1 [7452 B] Get:50 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libblockdev2 arm64 2.26-1ubuntu0.1 [45.5 kB] Get:51 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libdjvulibre-text all 3.5.28-2ubuntu0.22.04.1 [51.0 kB] Get:52 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libdjvulibre21 arm64 3.5.28-2ubuntu0.22.04.1 [590 kB] Get:53 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy/main arm64 libdvbv5-doc all 1.22.1-2build1 [1479 kB] Get:54 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libprotobuf23 arm64 3.12.4-1ubuntu7.22.04.4 [809 kB] Get:55 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy/main arm64 libre2-9 arm64 20220201+dfsg-1 [153 kB] Get:56 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libssh-4 arm64 0.9.6-2ubuntu0.22.04.4 [185 kB] Get:57 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libssh-gcrypt-4 arm64 0.9.6-2ubuntu0.22.04.4 [224 kB] Get:58 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libudisks2-0 arm64 2.9.4-1ubuntu2.2 [168 kB] Get:59 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 libvpx7 arm64 1.11.0-2ubuntu2.4 [1042 kB] Get:60 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy/main arm64 libxcvt-dev arm64 0.1.1-3 [3236 B] Get:61 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 linux-libc-dev arm64 5.15.0-144.157 [1294 kB] Get:62 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/universe arm64 python3-pip all 22.0.2+dfsg-1ubuntu0.6 [1306 kB] Get:63 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3-protobuf arm64 3.12.4-1ubuntu7.22.04.4 [352 kB] Get:64 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3-urllib3 all 1.26.5-1~exp1ubuntu0.3 [98.6 kB] Get:65 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 python3-requests all 2.25.1+dfsg-2ubuntu0.3 [48.8 kB] Get:66 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 udisks2 arm64 2.9.4-1ubuntu2.2 [275 kB] Get:67 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 xserver-xorg-dev arm64 2:21.1.4-2ubuntu1.7~22.04.15 [205 kB] Get:68 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates/main arm64 xwayland arm64 2:22.1.1-1ubuntu0.19 [918 kB] Fetched 77.1 MB in 4min 46s (270 kB/s) Extracting templates from packages: 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(Reading database ... 126982 files and directories currently installed.) Preparing to unpack .../libpam0g_1.4.0-11ubuntu2.6_arm64.deb ... Unpacking libpam0g:arm64 (1.4.0-11ubuntu2.6) over (1.4.0-11ubuntu2.5) ... Setting up libpam0g:arm64 (1.4.0-11ubuntu2.6) ... (Reading database ... 126982 files and directories currently installed.) Preparing to unpack .../libpam-modules-bin_1.4.0-11ubuntu2.6_arm64.deb ... Unpacking libpam-modules-bin (1.4.0-11ubuntu2.6) over (1.4.0-11ubuntu2.5) ... Setting up libpam-modules-bin (1.4.0-11ubuntu2.6) ... (Reading database ... 126982 files and directories currently installed.) Preparing to unpack .../libpam-modules_1.4.0-11ubuntu2.6_arm64.deb ... Unpacking libpam-modules:arm64 (1.4.0-11ubuntu2.6) over (1.4.0-11ubuntu2.5) ... Setting up libpam-modules:arm64 (1.4.0-11ubuntu2.6) ... Installing new version of config file /etc/security/namespace.init ... (Reading database ... 126982 files and directories currently installed.) 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Setting up libblockdev-swap2:arm64 (2.26-1ubuntu0.1) ... Setting up libdjvulibre21:arm64 (3.5.28-2ubuntu0.22.04.1) ... Setting up libnss-systemd:arm64 (249.11-0ubuntu3.16) ... Setting up libblockdev-loop2:arm64 (2.26-1ubuntu0.1) ... Setting up ghostscript-x (9.55.0~dfsg1-0ubuntu5.12) ... Setting up libblockdev2:arm64 (2.26-1ubuntu0.1) ... Setting up libblockdev-part2:arm64 (2.26-1ubuntu0.1) ... Setting up python3.10-minimal (3.10.12-1~22.04.10) ... Setting up apport (2.20.11-0ubuntu82.9) ... apport-autoreport.service is a disabled or a static unit, not starting it. Setting up libpython3.10-stdlib:arm64 (3.10.12-1~22.04.10) ... Setting up python3-requests (2.25.1+dfsg-2ubuntu0.3) ... Setting up libblockdev-fs2:arm64 (2.26-1ubuntu0.1) ... Setting up git (1:2.34.1-1ubuntu1.15) ... Setting up libwebkit2gtk-4.0-37:arm64 (2.48.3-0ubuntu0.22.04.1) ... Setting up libpam-systemd:arm64 (249.11-0ubuntu3.16) ... Setting up ubuntu-advantage-tools (36ubuntu0~22.04) ... Setting up libsoup-gnome2.4-1:arm64 (2.74.2-3ubuntu0.6) ... Setting up udisks2 (2.9.4-1ubuntu2.2) ... Setting up libpython3.10:arm64 (3.10.12-1~22.04.10) ... Setting up python3.10 (3.10.12-1~22.04.10) ... Setting up gir1.2-soup-2.4:arm64 (2.74.2-3ubuntu0.6) ... Setting up libpython3.10-dev:arm64 (3.10.12-1~22.04.10) ... Setting up python3.10-dev (3.10.12-1~22.04.10) ... Setting up gir1.2-webkit2-4.0:arm64 (2.48.3-0ubuntu0.22.04.1) ... Processing triggers for hicolor-icon-theme (0.17-2) ... Processing triggers for doc-base (0.11.1) ... Processing 1 added doc-base file... Error in `/usr/share/doc-base/libdvbv5-doc.libdvbv5-reference', line 9: all `Format' sections are invalid. Note: `install-docs --verbose --check file_name' may give more details about the above error. Processing triggers for gnome-menus (3.36.0-1ubuntu3) ... Processing triggers for libc-bin (2.35-0ubuntu3.10) ... Processing triggers for man-db (2.10.2-1) ... Processing triggers for dbus (1.12.20-2ubuntu4.1) ... Processing triggers for mailcap (3.70+nmu1ubuntu1) ... Processing triggers for bamfdaemon (0.5.6+22.04.20220217-0ubuntu1) ... Rebuilding /usr/share/applications/bamf-2.index... Processing triggers for desktop-file-utils (0.26-1ubuntu3) ... (base) casbot@casbot:~/ros_catkin_ws$ sudo sh -c 'echo "deb https://mirrors.ustc.edu.cn/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-noetic.list' sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654 Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)). Executing: /tmp/apt-key-gpghome.6cqeROMOQT/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654 gpg: key F42ED6FBAB17C654: "Open Robotics <info@osrfoundation.org>" not changed gpg: Total number processed: 1 gpg: unchanged: 1 (base) casbot@casbot:~/ros_catkin_ws$ sudo apt update # 安装桌面完整版(约 1.5GB,网络不稳定时分段安装) sudo apt install ros-noetic-desktop-full -y --allow-unauthenticated Ign:1 http://deb.repo.autolabor.com.cn jammy InRelease Ign:2 http://deb.repo.autolabor.com.cn jammy Release Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:6 https://mirrors.ustc.edu.cn/ros/ubuntu jammy InRelease Hit:4 http://deb.repo.autolabor.com.cn jammy/main amd64 Packages Err:7 https://mirrors.ustc.edu.cn/ros/ubuntu jammy Release 404 Not Found [IP: 202.141.176.110 443] Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Ign:3 http://deb.repo.autolabor.com.cn jammy/main all Packages Ign:5 http://deb.repo.autolabor.com.cn jammy/main Translation-en Hit:8 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy InRelease Hit:9 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-updates InRelease Hit:10 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-backports InRelease Hit:11 http://packages.ros.org/ros/ubuntu focal InRelease Hit:12 http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports jammy-security InRelease Get:13 http://mirrors.tuna.tsinghua.edu.cn/ros2/ubuntu jammy InRelease [4682 B] Reading package lists... Done E: The repository 'https://mirrors.ustc.edu.cn/ros/ubuntu jammy Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. Reading package lists... Done Building dependency tree... Done Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: gazebo11 : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-iostreams1.71.0 but it is not installable Depends: libboost-program-options1.71.0 but it is not installable Depends: libboost-regex1.71.0-icu66 but it is not installable Depends: libboost-thread1.71.0 but it is not installable Depends: libgazebo11 (= 11.15.1-1~focal) but it is not going to be installed Depends: libignition-msgs5 (>= 5.11.0) but it is not going to be installed Depends: libignition-transport8 (>= 8.5.0) but it is not going to be installed Depends: libprotobuf17 but it is not installable Depends: gazebo11-common (>= 11.2.0) but it is not going to be installed Recommends: gazebo11-plugin-base but it is not going to be installed libgazebo11-dev : Depends: libignition-transport8-dev but it is not going to be installed Depends: libignition-msgs5-dev but it is not going to be installed Depends: libignition-fuel-tools4-dev but it is not going to be installed Depends: libignition-common3-dev but it is not going to be installed Depends: libignition-common3-graphics-dev but it is not going to be installed Depends: libdart6-collision-bullet-dev (< 6.10.0) but it is not installable or libdart-collision-bullet-dev (< 6.10.0) but it is not going to be installed Depends: libdart6-collision-ode-dev (< 6.10.0) but it is not installable or libdart-collision-ode-dev (< 6.10.0) but it is not going to be installed Depends: libdart6-utils-urdf-dev (< 6.10.0) but it is not installable or libdart-utils-urdf-dev (< 6.10.0) but it is not going to be installed Depends: libdart6-external-odelcpsolver-dev (< 6.10.0) but it is not installable or libdart-external-odelcpsolver-dev (< 6.10.0) but it is not going to be installed Depends: libdart6-external-ikfast-dev (< 6.10.0) but it is not installable or libdart-external-ikfast-dev (< 6.10.0) but it is not going to be installed Depends: libgazebo11 (= 11.15.1-1~focal) but it is not going to be installed Depends: gazebo11-common (>= 11.2.0) but it is not going to be installed Depends: gazebo11-plugin-base (= 11.15.1-1~focal) but it is not going to be installed libicu-dev : Depends: libicu70 (= 70.1-2) but 70.1-2ubuntu1 is to be installed libjsoncpp-dev : Depends: libjsoncpp25 (= 1.9.5-3) but 1.9.5-3ubuntu0.1 is to be installed ros-noetic-actionlib : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-actionlib-tutorials : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-bondcpp : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-camera-calibration-parsers : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-python1.71.0 but it is not installable Depends: libboost-python1.71.0-py38 but it is not installable Depends: libpython3.8 (>= 3.8.2) but it is not installable Depends: libyaml-cpp0.6 (>= 0.6.2) but it is not installable ros-noetic-class-loader : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libpocofoundation62 (>= 1.9.2) but it is not installable ros-noetic-compressed-depth-image-transport : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-compressed-image-transport : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-controller-manager : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-cpp-common : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-cv-bridge : Depends: libboost-python1.71.0 but it is not installable Depends: libboost-python1.71.0-py38 but it is not installable Depends: libboost-regex1.71.0-icu66 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libpython3.8 (>= 3.8.2) but it is not installable ros-noetic-depth-image-proc : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-diagnostic-aggregator : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-regex1.71.0-icu66 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-diagnostic-common-diagnostics : Depends: hddtemp but it is not installable ros-noetic-diff-drive-controller : Depends: libconsole-bridge0.4 but it is not installable Depends: liburdfdom-model but it is not installable ros-noetic-eigen-conversions : Depends: liborocos-kdl1.4 but it is not installable ros-noetic-filters : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-gazebo-plugins : Depends: libboost-thread1.71.0 but it is not installable Depends: libgazebo11 (>= 11.15.1) but it is not going to be installed Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libprotobuf17 but it is not installable ros-noetic-gazebo-ros : Depends: libboost-thread1.71.0 but it is not installable Depends: libgazebo11 (>= 11.15.1) but it is not going to be installed Depends: libprotobuf17 but it is not installable ros-noetic-gazebo-ros-control : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libgazebo11 (>= 11.15.1) but it is not going to be installed Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable Depends: ros-noetic-transmission-interface but it is not going to be installed ros-noetic-image-geometry : Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-image-proc : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-image-publisher : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-videoio4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-image-rotate : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-image-transport : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-image-view : Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-highgui4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-videoio4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-interactive-markers : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-joint-state-controller : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-kdl-conversions : Depends: liborocos-kdl1.4 but it is not installable ros-noetic-kdl-parser : Depends: liborocos-kdl1.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable Depends: liburdfdom-model but it is not installable ros-noetic-laser-assembler : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-laser-filters : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-laser-geometry : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-nodelet : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-nodelet-tutorial-math : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-pcl-ros : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libpcl-common1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-features1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-filters1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-io1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-search1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-segmentation1.10 (>= 1.10.0+dfsg) but it is not installable Depends: libpcl-surface1.10 (>= 1.10.0+dfsg) but it is not installable ros-noetic-pluginlib : Depends: libboost-filesystem1.71.0 but it is not installable ros-noetic-pluginlib-tutorials : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-position-controllers : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-robot-state-publisher : Depends: liborocos-kdl1.4 but it is not installable Depends: liburdfdom-world but it is not installable ros-noetic-rosbag : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-program-options1.71.0 but it is not installable Depends: libboost-regex1.71.0-icu66 but it is not installable Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: ros-noetic-rosbag-storage but it is not going to be installed ros-noetic-rosconsole : Depends: libboost-regex1.71.0-icu66 but it is not installable Depends: liblog4cxx10v5 (>= 0.10.0) but it is not installable ros-noetic-rosconsole-bridge : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-roscpp : Depends: libboost-chrono1.71.0 but it is not installable Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-thread1.71.0 but it is not installable ros-noetic-roscpp-tutorials : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-rospack : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-program-options1.71.0 but it is not installable Depends: libpython3.8 (>= 3.8.2) but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable ros-noetic-rqt-image-view : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable Depends: ros-noetic-rqt-gui-cpp but it is not going to be installed ros-noetic-rqt-rviz : Depends: libboost-program-options1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: ros-noetic-rqt-gui-cpp but it is not going to be installed ros-noetic-rviz : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libboost-program-options1.71.0 but it is not installable Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable Depends: liburdfdom-world but it is not installable Depends: libyaml-cpp0.6 (>= 0.6.2) but it is not installable ros-noetic-rviz-plugin-tutorials : Depends: libboost-thread1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable ros-noetic-stage-ros : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-stereo-image-proc : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-tf : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-tf-conversions : Depends: liborocos-kdl1.4 but it is not installable ros-noetic-tf2 : Depends: libconsole-bridge0.4 but it is not installable ros-noetic-tf2-ros : Depends: libboost-thread1.71.0 but it is not installable Depends: ros-noetic-tf2-py but it is not going to be installed ros-noetic-theora-image-transport : Depends: libconsole-bridge0.4 but it is not installable Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable ros-noetic-turtle-actionlib : Depends: libboost-thread1.71.0 but it is not installable ros-noetic-urdf : Depends: libboost-filesystem1.71.0 but it is not installable Depends: libconsole-bridge0.4 but it is not installable Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable Depends: liburdfdom-model but it is not installable E: Unable to correct problems, you have held broken packages.我执行到第三步后出现报错,请在此基础上给我能够成功安装ros1的操作步骤
07-23
【电力系统】单机无穷大电力系统短路故障暂态稳定Simulink仿真(带说明文档)内容概要:本文档围绕“单机无穷大电力系统短路故障暂态稳定Simulink仿真”展开,提供了完整的仿真模型与说明文档,重点研究电力系统在发生短路故障后的暂态稳定性问题。通过Simulink搭建单机无穷大系统模型,模拟不同类型的短路故障(如三相短路),分析系统在故障期间及切除后的动态响应,包括发电机转子角度、转速、电压和功率等关键参数的变化,进而评估系统的暂态稳定能力。该仿真有助于理解电力系统稳定性机理,掌握暂态过程分析方法。; 适合人群:电气工程及相关专业的本科生、研究生,以及从事电力系统分析、运行与控制工作的科研人员和工程师。; 使用场景及目标:①学习电力系统暂态稳定的基本概念与分析方法;②掌握利用Simulink进行电力系统建模与仿真的技能;③研究短路故障对系统稳定性的影响及提高稳定性的措施(如故障清除时间优化);④辅助课程设计、毕业设计或科研项目中的系统仿真验证。; 阅读建议:建议结合电力系统稳定性理论知识进行学习,先理解仿真模型各模块的功能与参数设置,再运行仿真并仔细分析输出结果,尝试改变故障类型或系统参数以观察其对稳定性的影响,从而深化对暂态稳定问题的理解。
本研究聚焦于运用MATLAB平台,将支持向量机(SVM)应用于数据预测任务,并引入粒子群优化(PSO)算法对模型的关键参数进行自动调优。该研究属于机器学习领域的典型实践,其核心在于利用SVM构建分类模型,同时借助PSO的全局搜索能力,高效确定SVM的最优超参数配置,从而显著增强模型的整体预测效能。 支持向量机作为一种经典的监督学习方法,其基本原理是通过在高维特征空间中构造一个具有最大间隔的决策边界,以实现对样本数据的分类或回归分析。该算法擅长处理小规模样本集、非线性关系以及高维度特征识别问题,其有效性源于通过核函数将原始数据映射至更高维的空间,使得原本复杂的分类问题变得线性可分。 粒子群优化算法是一种模拟鸟群社会行为的群体智能优化技术。在该算法框架下,每个潜在解被视作一个“粒子”,粒子群在解空间中协同搜索,通过不断迭代更新自身速度与位置,并参考个体历史最优解和群体全局最优解的信息,逐步逼近问题的最优解。在本应用中,PSO被专门用于搜寻SVM中影响模型性能的两个关键参数——正则化参数C与核函数参数γ的最优组合。 项目所提供的实现代码涵盖了从数据加载、预处理(如标准化处理)、基础SVM模型构建到PSO优化流程的完整步骤。优化过程会针对不同的核函数(例如线性核、多项式核及径向基函数核等)进行参数寻优,并系统评估优化前后模型性能的差异。性能对比通常基于准确率、精确率、召回率及F1分数等多项分类指标展开,从而定量验证PSO算法在提升SVM模型分类能力方面的实际效果。 本研究通过一个具体的MATLAB实现案例,旨在演示如何将全局优化算法与机器学习模型相结合,以解决模型参数选择这一关键问题。通过此实践,研究者不仅能够深入理解SVM的工作原理,还能掌握利用智能优化技术提升模型泛化性能的有效方法,这对于机器学习在实际问题中的应用具有重要的参考价值。 资源来源于网络分享,仅用于学习交流使用,请勿用于商业,如有侵权请联系我删除!
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