Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    int retVal = 0;
    for (int i = 0;i<k-1;i++)
    {
        if (((*mem == 1) && (*(mem+1) == 0)) || ((*mem == 0) && (*(mem+1) == 1)))
        {
            retVal = 1;
            mem++;
        }
        else
        {
            retVal = 0;
            break;
        }
    }

    return retVal;
}

int main() {
    int n, k, arr[100];
    scanf("%d %d", &n, &k);

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

    int res = is_alternating_pattern(arr, k);
    printf("%d", res);

    return 0;
}

Solving Approach