题解 | #判断是不是字母#

#include <stdio.h>

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