ex2

#include<iostream>
#include<string>
using namespace std;
const int length = 100;
int symbolPosition(char arr[length], char symbol, int n, int counter, int i)
{
    if (counter == n)
    {
        return i - 1;
    }
    else if (arr[i] == symbol && arr[i] != '\0')
    {
        return symbolPosition(arr, symbol, n, counter + 1, i + 1);
    }
    else if (arr[i] != '\0')
    {
        return symbolPosition(arr, symbol, n, counter, i + 1);
    }
    else return -1;
}
int main() {
    char arr[length];
    char symbol;
    int n;
    int counter = 0;
    int i = 0;
    cin >> arr;
    cin >> symbol;
    cin >> n;
    cout << symbolPosition(arr, symbol, n, counter, i) << endl;
    system("pause");
    return 0;
}