题解 | #判断是不是字母#

int main()
{
    char a;
    while( (a = getchar()) != -1)
    {
         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);
    }
        getchar();
    }
    
   
    return 0;
}