change for(j=i;j<10;j++) to for(j=1;j<=i;j++)

and
change printf("%d*%d=%-3d",i,j,s);
to printf("%d*%d=%-3d",j,i,s);

偶自己写的：
#include<iostream>
#include<conio.h>

using namespace std;

void Multi_Table(){
int i,j;
for( i=0;i<=9;){
for( j=0;j<=i;j++)
cout<<i<<"*"<<j<<"="<<i*j<<" ";
cout<<endl;
i++;
}
}

int main()
{
Multi_Table();
getch();
return 0;
}