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

/* 
tim so nho nhat cua 4 so a, b,c,d 
gan dai min la 1 so bat ky roi lan luot lay cac so con lai so sang voi min,
neu no con nho hon min hien tai thi cap nhat min hien tai la chinh so do .
*/
void nhapdulieu( int &x )
{
	printf("\nNHAP so nguyen : ");
	scanf("%d",&x);
}
int timmin (int a , int b) // cach 1 
{
	return a < b ? a : b; 
}

int timmin (int a, int b, int c, int d)// cach 2 
{
	int min = a;
	if(b < a)
	{
	   min = b;
	}
	if(c < a)
	{
	   min = c;
	}
	if(d < a)
	{
	   min = d;
	}
	return min;
}


int main()
{     
	 int a , b,c,d;
	 nhapdulieu(a);
	 nhapdulieu(b);
	 nhapdulieu(c);
	 nhapdulieu(d);
	 
	 int min;
	 min = timmin( a,b,c,d);

	 printf("\nMin = %d",min);

	 /*int min;
	 min = timmin (a,b);
	 min = timmin(min, c);
	 min = timmin(min, d);*/ //cach lo minh khai 2 so nhung lai thay doi 4 so 

	 printf("\nso cua min la : %d",min);

	getch();
	return 0;


}