从键盘输入两个正整数

#include<stdio.h>
int main()
{
int a;
int b;
int tmp;
int add;

printf("请输入两个数\n");
scanf("%d%d",&a,&b);
if(a<b){
    tmp = b;
    b = a;
    a = tmp;
}
add = a*b;
while(a%b !=0){
    tmp = a%b;
    a = b;
    b = tmp;
}
printf("这两个数的最大公约数为:%d\n",b);
printf("这两个数的最小公倍数为:%d\n",add/b);
return 0;

}