Detect Alternating Pattern

Code

#include <stdio.h>

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