#include"stdio.h"
void main()
{
char ch,chout;
printf("請輸入任意字母，輸入#退出\n");
while(1)
{
ch = getchar();
if (('A'<=ch && ch<='Z') || 'a'<=ch && ch<='z')
{
if ((ch == 'Z') || (ch == 'z'))//如果是z或Z就顯示a或A
{
chout = ch - 25;
}
else
{
chout = ch+1;//轉換成下壹個字母
}
putchar(chout);
putchar('\n');
}
else if ('#'==ch)
{
break;
}
}
}