Reverse an Array In-Place

Code

#include <stdio.h>

int *reverse_array(int arr[], int n) {
    int *start, *end, temp;
    start = arr;
    end = arr;
    for (int i = 0; i < n - 1; ++i) end++;
    for (int i = 0; i < n / 2; ++i) {
        temp = *start;
        *start = *end;
        *end = temp; 
        start++;
        end--; 
    }
    return arr;
}

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