++i和i++

#include <stdio.h>
int main()
{int i=5,j;j = ++i;printf("i=%d,j=%d\n", i, j);i = 5;j = i++;printf("i=%d,j=%d\n", i, j);system("pause");return 0;}

i=6,j=6
i=6,j=5
请按任意键继续. . .

条件运算符

goto语句

#include <stdio.h>
int main()
{int i = 5;while (i++){if (i > 10){goto Label;}}Label: printf("Here,i=%d\n", i);system("pause");return 0;
}

Here,i=11
请按任意键继续. . .

开发中要慎用goto语句。

注释

不合理的注释

合理注释参考

https://blog.csdn.net/weixin_40962970/article/details/115005630?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522169984104916800180651855%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=169984104916800180651855&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2_allfirst_rank_ecpm_v1~rank_v31_ecpm-4-115005630-null-null.142^v96pc_search_result_base1&utm_term=C%E8%AF%AD%E8%A8%80%E5%90%88%E7%90%86%E7%9A%84%E6%B3%A8%E9%87%8A&spm=1018.2226.3001.4187