用一个变量打印九九乘法表

#include<stdio.h> 

int main()
{
    int m;
    for (m = 0; m < 81; m++)
    {
        if ((m % 9) > (m / 9))
        {
            continue;
        }
        printf("%d * %d = %2d  ", (m % 9) + 1, (m / 9) + 1, ((m % 9) + 1) * ((m / 9) + 1));
        if ((m % 9) == (m / 9))
        {
            printf("\n");
        }
    }
    return 0;
}