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 left=0;
    int right=left+2;
    while(left<right && right<n){
        if(*(mem+right)-*(mem+(right-1))==1 && *(mem+(right-1))-*(mem+(right-2))==1){
            return left;
        }
        left++;
        right++;
    }
    return -1;
}

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