59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

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