#include <stdio.h>

void swap(int *x, int *y){
    int tmp = *y;
    *y = *x;
    *x = tmp;
}

int main() {
    int a = 3, b = 1, c = 2;

    if(a > b) swap(&a,&b);
    if(a > c) swap(&a,&c);
    if(b > c) swap(&b,&c);

    printf("a=%d<b=%d<c=%d\n",a,b,c);

    return 0;
}