Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

int find_pattern(int *mem, int n) {

    int index = 0;
    for(int i =0 ; i<n-2 ; i++){
     if(  *(mem+index +1) == (*(mem+index) )+1 && (*(mem+index+1))+1 == *(mem+index+2)  ) return index  ;
     index++ ; 
    }
    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