Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    int op = -1;
    int *ptr = mem;
    for (int i =0; i<n-2;i++){
        if((*(ptr+1)-*(ptr)==1) & (*(ptr+2)-*(ptr+1)==1)) {
            op=i; 
            break;
        }
        ptr++;
    }
    return op;
}

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

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

    int res = find_pattern(arr, n);
    printf("%d", res);

    return 0;
}

Solving Approach