代码

#include<stdio.h>
#include<stdlib.h>int
main(int argc, char* argv[])
{char * line = NULL;size_t len = 0;ssize_t read_len;while ((read_len=getline(&line, &len, stdin)) != -1) {   if (read_len > 0 && line[read_len-1] == '\n'){   line[read_len-1] = '\0';read_len -= 1;  }   printf("%s\n", line);}   return 0;
}

参考

https://blog.csdn.net/lichengyu/article/details/41621099