Find Duplicate in Range 0 and n-1

Code

#include <stdio.h>

int find_duplicate(int arr[], int n) {
    // Your logic here
    int temp=0;
    int result=0;
    for(int i=0;i<(n-1);i++){
        temp=arr[i];

        for(int j=i+1;j<n;j++){

            if(temp==arr[j]){
                result= arr[j];
                goto exit_loops;
            }
        }
 
    }
    exit_loops:
     return result;
}

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

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

    int result = find_duplicate(arr, n);
    printf("%d", result);
    return 0;
}

Solving Approach