初级c语言 nested while

Question

Output multiplication tables from step 2 to step 9 • Use the nested while statement
• Don’t use printf function more than 4 times
求大神帮忙解答啊

Answer 1

 #include <stdio.h>

int main()
{
    int acc = 0;
    while (++acc < 72)
    {
        if (acc % 9 == 0 || acc == 1)
            printf("\n***%d***\n", acc / 9 + 2);
        printf("%d * %d = %d\n", acc / 9 + 2, acc % 9 + 1, (acc / 9 + 2) * (acc % 9 + 1));
    }
}