题解 | 判断是不是字母

#include <stdio.h>

int main() {
    char a;
    int b;
   while(scanf("%c",&a)!=EOF){
    if(a == '\n') continue;
    b = (int)a;
   if((b>=65 && b <=90) || (b>= 97 && b<= 122)){
    printf("%c is an alphabet.\n",a);
   }
   else{
    printf("%c is not an alphabet.\n",a);
   }
   }
    return 0;
}