题解 | #判断是不是字母#

#include<stdio.h>
int main()
{
	char a;
	
	while(scanf("%c", &a)!=EOF)
	{ 
		if(a!='\n')
		if ((a >= 'A' && a <= 'Z') || (a >= 'a' && a <= 'z'))
			printf("%c is an alphabet.\n", a);
		else
			printf("%c is not an alphabet.\n",a);
	}
	return 0;
}