Checksum Validation

Code

#include <stdio.h>

int validate_checksum(int *mem, int n) {
    int res = 0;

    // XOR all elements except the last one
    for (int i = 0; i < n - 1; i++) {
        res ^= mem[i];
    }

    if (res == mem[n - 1]) {
        return 1;  
    } else {
        return 0;  
    }
}

int main() {
    int n, arr[100];

    scanf("%d", &n);

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

    int result = validate_checksum(arr, n);
    printf("%d", result);

    return 0;
}

Solving Approach