#include <stdio.h>
int main ()
{
	int a,b,c,t,max,min;
	printf("please press any number.");
	scanf("%d",&a);
	max=a,min=a;
	do
	{
		printf("please press any number.");
		c=scanf("%d",&b);
		if(max<b)
			t=max,max=b,b=t;
		if(min>b)
			t=min,min=b,b=t;
	}while(c==1);
	printf("max=%d,min=%d\n",max,min);
	return 0;
}