59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

int find_pattern(int *mem, int n) {
    for(int i=0;i<n-3;i++){
        if(*(mem)==*(mem+1)-1){
            if((*mem+1)==*(mem+2)-1){
                return i;
            }
        }
        else{
            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;
}