验证了其他字符  都是对的  比如输入A，输出是65 A  只有输入！结果不对

#include <stdio.h>

int main(void)
{
  int a;
  char c;
   
  printf("input\n");
  scanf("%c",&c);
  
//  c = a;
  
  printf("c = %d\n",c);
  printf("c = '%c'\n",c);
  
  return 0;

}

/*结果如下
input
！
c = -93
c = '?

--------------------------------
Process exited after 40.54 seconds with return value 0
请按任意键继续. . .*/

谢谢  厉害啊 向你学习