题解 | 判断是不是字母

#include <stdio.h>

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