看了网友给的留言,原来得到当前用户名可以不是那么麻烦,修改一下,感谢网友
#include <stdio.h> #include <unistd.h> #include <sys/types.h> #include <pwd.h>
int main() { uid_t userid; struct passwd* pwd; userid=getuid(); printf("userid is %d\n",userid); pwd=getpwuid(userid); printf("username is %s\nuserdir i %s\n",pwd->pw_name,pwd->pw_dir); }

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