59. Scan Memory for Three Consecutive Increasing Values

#include <stdio.h>

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

/*

2,4,5,7,8,9

*/