http://stackoverflow.com/q/17502980/187663

Cxx code (H2CO3)

#include <vector>
#include <iostream>
#include <cstdlib>
#include <ctime>

int main()
{
    std::vector<std::string> v;

    v.push_back("Yes");
    v.push_back("Signs point to yes");
    v.push_back("It is certain");
    v.push_back("It is decidedly so");
    v.push_back("Without a doubt");
    v.push_back("Yes, definitely");
    v.push_back("You may rely on it");
    v.push_back("As I see it yes");
    // etc.

    char q[0x100] = { 0 };

    while (true) {
        std::srand(std::time(nullptr));
        int idx = rand() % v.size(); // this isn't perfect either, by the way

        std::cout << "Ask a question:" << std::endl;

        std::cin.getline(q, sizeof(q));
        if (std::string(q) == "exit")
            break;

        std::cout << v[idx] << std::endl;
    }

    return 0;
}