Utilities

Cool code emulates scene in Matrix.cpp

#include <iostream>;
#include <string>;
#include <chrono>;
#include <thread>;
#include <cstdlib>;
const int width = 158; // Width of terminal window
const int flipsPerLine = 5; // No. of columns changed per line
const int millisecondsOfSleep = 50; // Delay between lines in millisecond
int main()
{
    srand(time_t(NULL));
    bool switches[width] = { true };
    const std::string garbage = "1234567890/*-+.,./;[]\\=_~`!@#$%^&amp;*()";
    const auto glen = garbage.size();
    while (true) { // Waiting for Ctrl-C
        for (int i = 0; i != width; ++i) {
            if (switches[i]) {
                std::cout << garbage[rand() % glen];
            } else {
                std::cout << ' ';
            }
        }
        std::cout << std::endl;
        for (int i = 0; i != flipsPerLine; ++i) {
            int x = rand() % width;
            switches[x] = (switches[x]) ? false : true;
// Flipping switches
        }
        std::this_thread::sleep_for(std::chrono::milliseconds(millisecondsOfSleep));
    }
    return 0;
}