Sample Code

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
void sort_three(int *x, int *y, int *z);
void swap_nums(int *x, int *y);
int main() {
    int x, y, z;
    
    scanf("%d %d %d", &x, &y, &z);
    sort_three(&x, &y, &z);
    printf("%d %d %d\n", x, y, z);
    return 0;
}
/*
    Takes in three integer pointers and sorts the values
    they point to in increasing order.
*/
void sort_three(int *x, int *y, int *z) {
    // TODO: Implement this function :)
    if (*x > *z) {
        swap_nums(x, z);
    }
    if (*x > *y) {
        swap_nums(x, y);
    }
    // Now the smallest element is definitely in `x`.
    if (*y > *z) {
        swap_nums(y, z);
    }
}
/* 
    Swap where the two pointers point to
*/
void swap_nums(int *x, int *y) {
    int tmp = *x;
    *x = *y;
    *y = tmp;
}