c - 我该如何解决我的编译错误以及我应该进行哪些更改以使其改进

Question

我的源代码中的编译错误在c:

请告诉我这个编译错误是什么以及如何解决它以及我可以进行哪些更正

Answer 1

如果我汇总所有评论和更多内容:

#include <stdio.h>

int main()
{
  int num;

  printf("enter a number less than 10 : ");
  if (scanf("%d", &num) != 1)
    puts("invalid input");
  else if (num < 10)
    puts("what an obidient savant you are!");
  else
    puts("wrong number");

  return 0; // may be return an other value on error cases ?
}

示例:

pi@raspberrypi:/tmp $ gcc -pedantic -Wall c.c
pi@raspberrypi:/tmp $ ./a.out
enter a number less than 10 : 1
what an obidient savant you are!
pi@raspberrypi:/tmp $ ./a.out
enter a number less than 10 : z
invalid input
pi@raspberrypi:/tmp $ ./a.out
enter a number less than 10 : 20
wrong number