How to Pause a Program in C++?

// C++ program to pause a program execution

#include <chrono>
#include <iostream>
#include <thread>
using namespace std;

int main()
{
    // Declare an integer variable to hold user input.
    int flag;

    // Print message to inform the user that the program is
    // paused.
    cout << "Your Program is paused! To continue, Press "
            "Enter."
         << endl;

    // Wait for user input.
    flag = cin.get();

    // Print message indicating the program is continuing
    // and will wait for a while.
    cout << "Continuing... Wait for a While" << endl;

    // Pause the program execution for 1000 milliseconds (1
    // second).
    this_thread::sleep_for(chrono::milliseconds(1000));

    // Print message indicating the program has resumed
    // after user input.
    cout << "Program resumed after user input." << endl;

    // Return EXIT_SUCCESS to indicate successful execution
    // of the program.
    return EXIT_SUCCESS;
}