#include<stdio.h>
int main(void)
{
   char c1,c2,p; /*定义三个字符变量*/
   c2=98;           
   c1=getchar();
   c2=getchar();
   putchar(c1);
   printf("\n");
   printf("%c\n",c2);
   printf("c1=%d,c2=%d\n",c1,c2);/*输出c1 c2对应的ASCII码*/
   p=c1-c2;
   printf("p=%c\n",p);
   system("pause");
   return 0;
}

是的，c2是32

一语惊醒梦中人！谢谢主！