小九九

#include <stdio.h>
int main(int argc, char const *argv[])
{
    for (int i = 1; i < 10; ++i)
    {
        for (int f = 1; f <= i; ++f)
        {
            printf("%d*%d=%d   ",f,i,f*i );
        }printf("\n");
    }
    return 0;
}