#include <stdio.h>
#include <conio.h>

//nhap vao 4 so nguyen a,b,c,d in ra man hinh ket qua so lon nhat va nho nhat 
int main()
{    
	int a , b , c , d;

	printf("\nnhap a: ");
	scanf("%d",&a);

	printf("\nhap b : ");
	scanf("%d",&b);

	printf("\nhap c : ");
	scanf("%d",&c);

	printf("\nnhap d: ");
	scanf("%d",&d);

	int max,min; //tim so nho va lon nhat bang toan tu 3 ngoi

	max = a > b ? a : b;

	max = max > c ? max : c;

	max = max > d ? max : d;

	min = a < b ? a : b;

	min = min < c ? min : c;

	min = min < d ? min : d;

	printf("\nso lon nhat = %d",max);

	printf("\nso nho nhat = %d",min);
  
    
   getch();
   return 0;


}