#include <stdio.h>
int main(int argc,constchar * argv[])
{
char ch;
int n,i,j;
printf("请输入一个大写字母:\n");
scanf("%c",&ch);
#include <stdio.h>
int main(int argc,constchar * argv[])
{
char ch;
int n,i,j;
printf("请输入一个大写字母:\n");
scanf("%c",&ch);