#include<stdio.h>
int main()
{
    int i,j,s,z;
    scanf("%d%d",&i,&j);
    do
    {
        if(i>j)
        {
        s=i%j;
        i=j;
        j=s;
        }
        else
        {
            s=j%i;
            j=i;
            i=s;
        }
    }
        while(s==0);
    z=i*j/s;
    printf("%d\n",s);
    printf("%d\n",z);
}

那应该怎么改?

谢谢各位大神的帮助