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 num=*mem;
    int consecutive=1;
    int start=0;
    if (n<3){
        return -1;
    }
    for (int i=1;i<n;i++){
        mem++;
        if (num==((*mem)-1)){
            if (consecutive==1){
                start=i-1;
            }
            consecutive++;
        }
        else{
            consecutive=1;
            start=i-1;
        }
        if (consecutive==3){
            return start;
        }
        num=*mem;
    }
    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