Detect Alternating Pattern

Code

#include <stdio.h>

int is_alternating_pattern(int *mem, int k) {
    int *p = mem;
    int expected = *p;
    for(int i=0; i<k;i++){
        if (*p!=expected){
              return 0;
        }
        expected=1-expected;
        p++;

  }
  return 1;
}


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