59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    // Write your pointer-based logic here
    if(n<3)
        return -1;
    for(int *p=mem;p<=mem+n-3;p++){
        if((*p == *(p+1)-1) && (*(p+1) == *(p+2)-1)){
            return (int)(p-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;
}