на Си
Code
#include <stdio.h>
#define MAX(x,y) (x) > (y) ? (x) : (y)
#define MIN(x,y) (x) < (y) ? (x) : (y)
int main(void) {
int a, b, c, d;
scanf("%i %i %i %i", &a, &b, &c, &d);
printf("max = %i, min = %i", MAX(MAX(a,b), MAX(c,d)), MIN(MIN(a,b), MIN(c,d)));
return 0;
}