求最小公倍数
#include<stdio.h>
int main()
{
    int a,b,i;
    printf("%d,%d\n",a,b);
    scanf("%d,%d",&a,&b);
    if (a>b)
    {
    printf("%d,%d\n",a,b);
    scanf("%d,%d",&a,&b);
        for (i=2;i<=b;i++)
    if(a%b!=i)
    {   printf("a*b=%d\n",a*b);
    }
    else
    {printf("(a/i)*(b/i)=%d\n",(a/i)*(b/i));}
    }
    else
    {printf("%d,%d\n",a,b);
    scanf("%d,%d",&a,&b);
        for(i=2;i<=a;i++)
            if(a%b!=i)
            {   printf("a*b=%d\n",a*b);
    }
    else
    {printf("(a/i)*(b/i)=%d\n",(a/i)*(b/i));}
    }

}