linux-c/c++调试利器gdb、ddd小试

本文详细介绍如何使用GDB在shell窗口中进行程序调试,并演示了设置断点、监视变量等操作步骤。此外,还介绍了使用DDD进行图形化调试的方法。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

一、gdb,在shell窗口调试

main.c内容:

main.c

#include <stdio.h>

int main() 

{

int y=0;

for (int i=0;i<10;i++){

   y+=i;

}

return 0;

}

深未来技术原创文章,如转载,请注明来源http://deepfuture.iteye.com/ 

编译:

 

deepfuture@deepfuture-desktop:~/test$ gcc -ggdb -std=c99 -o main main.c

 

启动gdb

1、gdb 执行文件名

 

deepfuture@deepfuture-desktop:~/test$ gdb main

GNU gdb (GDB) 7.1-ubuntu

Copyright (C) 2010 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.  Type "show copying"

and "show warranty" for details.

This GDB was configured as "i486-linux-gnu".

For bug reporting instructions, please see:

<http://www.gnu.org/software/gdb/bugs/>...

Reading symbols from /home/deepfuture/test/main...done.

2、list为列出源代码

(gdb) list

1

2 #include <stdio.h>

3 int main() 

4 {

5 int y=0;

6 for (int i=0;i<10;i++){

7   y+=i;

8 }

9 return 0;

10 }

3、运行
(gdb) run
Starting program: /home/deepfuture/test/main 

Program exited normally.
4、退出gdb
(gdb) quit
5、启动gdb后,再设置要加载的文件
(gdb) file main
Reading symbols from /home/deepfuture/test/main...done.

6、设置断点,,使用break行号

(gdb) list
warning: Source file is more recent than executable.
1
2 #include <stdio.h>
3 int main() 
4 {
5 int y=0;
6 for (int i=0;i<10;i++){
7   y+=i;
8 }
9 return 0;
10 }

(gdb) break 7
Breakpoint 1 at 0x80483ca: file main.c, line 7.

7、运行,run
(gdb) run
Starting program: /home/deepfuture/test/main 

Breakpoint 1, main () at main.c:7
7   y+=i;
8、离开这个断点,继续运行
(gdb) c
Continuing.
9、监视变量
(gdb) watch y
Hardware watchpoint 2: y
10、检查变量变化
(gdb) c
Continuing.
Hardware watchpoint 2: y

Old value = 1
New value = 3
main () at main.c:6
6 for (int i=0;i<10;i++){
(gdb) c
Continuing.

Breakpoint 1, main () at main.c:7
7   y+=i;
(gdb) c
Continuing.
Hardware watchpoint 2: y

Old value = 3
New value = 6
main () at main.c:6
6 for (int i=0;i<10;i++){


二、ddd,使用
可以在选择行或某变量后,watch,break等按钮,很方便
右中部的面板是一些流程调试

 图形方式调试





 


评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值