c语言 九九乘法表

#include <stdio.h>

int main()
{
    int a, b;
    a = 1;
    b = 1;

    while (a <= 9)
    {
        b = 1;
        while (b <= a)
    {
        printf("%d*%d=%d\t", b , a, a * b);
        b++;
    }
        printf("\n");
        a++;
    }
}