#include<iostream.h>
int invite(int a,int b);
int multiple(int c,int d);
void main(void)
{
int m,n,t;
cout<<"請輸入兩個正整數："<<endl;
cin>>m>>n;
if(m<n)
{
t=m;
m=n;
n=t;
}
cout<<m<<"和"<<n<<"的最小公倍數是"<<invite(m,n)<<endl;
cout<<m<<"和"<<n<<"的最大公約數是"<<multiple(m,n)<<endl;
}
int invite(int a,int b)
{
int i;
for(i=1;i<=b;i++)
if((i*a)%b==0)
break;
return (i*a);
}
int multiple(int c,int d)
{
return (c*d/invite(c,d));
}
C：
include "stdio.h"
int gongyue(int a,int b);
int gongbei(int a,int b);
void main()
{
int a,b,temp,gy,gb;
clrscr();
printf("input two numbers please:");
scanf("%d,%d",&a,&b);
gy = gongyue(a,b);
gb = gongbei(a,b);
printf("最大公約數：%d\n",gy);
printf("最小公倍數：%d\n",gb);
getch();
}
int gongyue(int a,int b)
{
int temp;
while(b!=0)
{
temp=a%b;
a=b;
b=temp;
}
return a;
}
int gongbei(int a,int b)
{
int num,num1,temp;
num=a;
num1=b;
if(num >= num1)
{
temp=num;
num=num1;
num1=temp;
}
temp = gongyue(a,b);
return (num*num1/temp);
}
不明白的發消息給我。用VB也行。