Reverse an Array In-Place

#include <stdio.h>

void reverse_array(int arr[], int n) {
    // int tmp;
    // for (int i = 0 ; i < n / 2; i++)
    // {
    //     tmp = arr[i] ;
    //     arr[i] = arr[n-i-1];
    //     arr[n-i-1]= tmp;
    // }
    int i = 0, j = n-1;
    while(i<j)
    {
        arr[i] = arr[i] + arr[j];
        arr[j] = arr[i] - arr[j];
        arr[i] = arr[i] - arr[j];
        i++;j--;
    }
    // Your logic here
}

int main() {
    int n;
    scanf("%d", &n);

    int arr[100];
    for (int i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    reverse_array(arr, n);

    for (int i = 0; i < n; i++) {
        printf("%d", arr[i]);
        if(i < n-1){
        	printf(" ");
        }
    }
    return 0;
}