Reverse an Array In-Place

Code

#include <stdio.h>

void reverse_array(int *arr, int n) {
    for(int i=0;i<(n/2);i++){
       *(arr+i) += *(arr+n-i-1);
       *(arr+n-i-1) = *(arr+i) -  *(arr+n-i-1);
       *(arr+i) -= *(arr+n-i-1);
    }
}

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;
}

Solving Approach