Ever, we defeated by a dream!

One day on a boy's way home, a crowed bus, the boy standed in front of the conductor's table and his dear girlfriend standed not too far from him, in front of the door. Suddendly another young boy in a white shirt appeared in front of the boy's girlfriend, they talked as if they knew each other and the girl told his boyfriend that the boy was her old and best friend. "Nice to meet you!" the girl's boyfriend said with a smile and turned his sight out of the windows. Not too long time, when the boy looked his girlfriend again, he was shocked by the sence happened in his eyes, a deep and sweet kiss, his girlfriend and the young boy! His blood freezed, stearing his girlfriend with a unkown sight. Turn over himself, went into the crowed just with a cold smile and a strong terrible feeling.
Luckily, this is only a dream, and what I have to say is dream often obay the truth! For this, somethings we ever dreamed was just situations which we must forget as soon as possible as something happened in our real life. Between our best friend and ourselves, there is nothing cannot be solved, if a word your friend said to you let you feel not good, please just show yourself and him a smile and think it as a joke played on you. In other words, donnot mind the word, what's more is the relationship even the love and please remember that you should believe your friend all the time! Friend, to be yourself since finish being yourself, this is always a loop!
【无人机】基于改进粒子群算法的无人机路径规划研究[和遗传算法、粒子群算法进行比较](Matlab代码实现)内容概要:本文围绕基于改进粒子群算法的无人机路径规划展开研究,重点探讨了在复杂环境中利用改进粒子群算法(PSO)实现无人机三维路径规划的方法,并将其与遗传算法(GA)、标准粒子群算法等传统优化算法进行对比分析。研究内容涵盖路径规划的多目标优化、避障策略、航路点约束以及算法收敛性和寻优能力的评估,所有实验均通过Matlab代码实现,提供了完整的仿真验证流程。文章还提到了多种智能优化算法在无人机路径规划中的应用比较,突出了改进PSO在收敛速度和全局寻优方面的优势。; 适合人群:具备一定Matlab编程基础和优化算法知识的研究生、科研人员及从事无人机路径规划、智能优化算法研究的相关技术人员。; 使用场景及目标:①用于无人机在复杂地形或动态环境下的三维路径规划仿真研究;②比较不同智能优化算法(如PSO、GA、蚁群算法、RRT等)在路径规划中的性能差异;③为多目标优化问题提供算法选型和改进思路。; 阅读建议:建议读者结合文中提供的Matlab代码进行实践操作,重点关注算法的参数设置、适应度函数设计及路径约束处理方式,同时可参考文中提到的多种算法对比思路,拓展到其他智能优化算法的研究与改进中。
你的这段 C 代码实现了一个简单的“冒险故事生成器”,用户输入一些数据后,程序会根据这些输入输出一段定制化的文本故事。整体逻辑清晰,但存在一个**关键问题**:在读取字符 `name` 时使用了 `%c` 并且前面没有正确处理输入缓冲区中的换行符(`\n`),这会导致 `scanf("%c", &name)` 直接读取到回车键留下的换行符,而不是你期望输入的名字首字母。 --- ### ✅ 问题分析 ```c printf("Enter your name: "); getchar(); // ← 这里用 getchar() 是想“吸收”换行符,但不可靠 scanf("%c",&name); ``` - 当你输入完 `b` 后按回车,`scanf("%d", &b)` 只读取数字,**换行符 `\n` 仍留在输入缓冲区中**。 - 接着 `getchar();` 确实会吃掉这个 `\n`,看似“修复”了问题。 - 但如果用户输入名字时多打了空格或有其他输入残留,`getchar()` 可能误吞有效字符。 - 更严重的是:如果后续要读取字符串(比如完整姓名),只用 `%c` 显然不够。 此外,变量 `name` 是 `char` 类型,只能存储一个字符,所以它只能保存名字的**第一个字母**,无法保存整个名字。 --- ### ✅ 改进建议 1. 使用 `scanf(" %c", &name)` 中的前导空格来自动跳过空白字符(包括 `\n` 和空格)。 2. 或者更推荐地,使用 `fgets()` 来安全读取字符串,并提取第一个字符。 3. 添加输入验证和提示增强用户体验。 --- ### ✅ 改进后的完整代码(修正版) ```c #include <stdio.h> #include <string.h> int main() { int a, b, c; char name[50]; // 使用字符数组保存名字 printf("Welcome to Lost Fortune!\n\nPlease enter the following for your personalized adventure.\n\n"); printf("Enter a number: "); scanf("%d", &a); printf("Enter a number, smaller than the first: "); scanf("%d", &b); c = a - b; printf("Enter your name: "); scanf(" %49s", name); // 注意前面的空格吸收换行符,%49s防止溢出 printf("\nA brave group of %d set out on a quest -- in search of the lost treasure of the Ancient Dwarves.\n" "The group was led by the legendary rogue, %s.\n\n", a, name); printf("Along the way, a band of marauding ogres ambushed the party. All fought bravely under the command of %s, " "and the ogres were defeated, but at a cost.\n" "Of the adventurers, %d were vanquished, leaving just %d in the group.\n\n", name, b, c); printf("The party was about to give up all hope. But while laying the deceased to rest, they stumbled upon the buried fortune.\n" "So the adventurers split 1000 gold pieces. Each got 500 gold pieces. %s held on to the extra 0 pieces to keep things fair of course.\n", name); return 0; } ``` --- ### 🔍 代码解释 | 代码片段 | 解释 | |--------|------| | `char name[50];` | 定义一个足够大的字符数组来存储名字,避免只取一个字符的局限性。 | | `scanf(" %49s", name);` | 前导空格 ` ` 跳过任何残留的空白字符(如 `\n`);`%49s` 防止缓冲区溢出,最多读取 49 个字符,留一个给 `\0`。 | | 使用 `%s` 输出完整名字 | 故事中多次提到角色名,现在可以显示全名而非单个字母。 | | 字符串拼接与格式化输出 | 利用 `printf` 的多行字符串自动连接特性,提升可读性。 | --- ### 🧪 示例运行 ``` Welcome to Lost Fortune! Please enter the following for your personalized adventure. Enter a number: 10 Enter a number, smaller than the first: 3 Enter your name: Alice A brave group of 10 set out on a quest -- in search of the lost treasure of the Ancient Dwarves. The group was led by the legendary rogue, Alice. Along the way, a band of marauding ogres ambushed the party. All fought bravely under the command of Alice, and the ogres were defeated, but at a cost. Of the adventurers, 3 were vanquished, leaving just 7 in the group. The party was about to give up all hope. But while laying the deceased to rest, they stumbled upon the buried fortune. So the adventurers split 1000 gold pieces. Each got 500 gold pieces. Alice held on to the extra 0 pieces to keep things fair of course. ``` --- ### ❗常见错误提醒 - **不要用 `gets()`**:已废弃,极易导致缓冲区溢出。 - **慎用 `scanf("%c")`**:容易被换行符干扰,建议加空格:`scanf(" %c", &ch)`。 - **防止缓冲区溢出**:对字符串输入限制长度,如 `%49s`。 --- ###
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