编程输入一个字符串，并检查其是否…

# include "stdio.h"
# include "string.h"
# define N 100
main()
{
  int y=0,i,x;
  char s[N],t;
  printf("请输入字符串：");
  gets(s);
  x=strlen(s);
  for(i=0;i       if(s[i]!=s[x-i-1])
      {
         printf("NO\n");
         y++;
         return 0;
      }
  if(y==0)
    printf("YES\n");
}