Scan Memory for Three Consecutive Increasing Values

Code

#include <stdio.h>

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