#include <
stdio.h>
void main()
{
char ch;
scanf("%c",&ch);
(ch>='a'&&ch<='z'||ch>='A'&&ch<='Z')?
printf("是字母"):printf("不是字母");
}
如果一定要用ASCII码表中字符对应的数来写,那么:
#include <stdio.h>
void main()
{
char ch;
scanf("%c",&ch);
(ch>=65&&ch<=90||ch>=97&&ch<=122)?
printf("是字母"):printf("不是字母");
}