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