Checksum Validation

#include <stdio.h>

int validate_checksum(int *mem, int n) {
    // Write your XOR scan logic here
    if (mem == NULL || n < 2) {
        return 0; // need at least 1 data byte + 1 checksum byte
    }

    int i,x = 0;
    for ( i = 0; i < n - 1; i++) {
        x ^= mem[i];
    }
   
    return (x == mem[n - 1]) ? 1 : 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