else-if

执行下面的代码，进行条件判断。

#include <stdio.h>

int main(int argc, char const *argv[])
{
    char c = '6';
    if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')
    {
        printf("Letter.\n");
    }
    else if (c >= '0' && c <= '9')
    {
        printf("Number.\n");
    }
    else
    {
        printf("Other.\n");
    }
    return 0;
}