59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>


int find_pattern(int *mem, int n) {
   int *p1 = mem;
   int *p2 = mem + 1;
   int *p3 = mem + 2;

   for(int i; i <= n - 3; i++){
    if(*p1 + 1 == *p2 && *p2 + 1 == *p3){
        return i;
    }
    p1++;
    p2++;
    p3++;

   }
    
    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;
}