Reverse Array in C

reverse_array.c

#include <stdio.h>

int main() {
    int num, i;
    scanf("%d", &num);
    int array[num];
    for (i = 0; i < num; i++) {
        scanf("%d", &array[i]);
    }

    for (i = 0; i < (num - 1 - i); i++) {
        array[i] = array[i] + array[num - 1 - i];
        array[num - 1 - i] = array[i] - array[num - 1 - i];
        array[i] = array[i] - array[num - 1 - i];
    }

    for (i = 0; i < num; i++) {
        printf("%d ", array[i]);
    }
  return 0;
}