How to implement a "press enter" command?-CodePudding

How do I manage to implement a "press enter" command instead of having the user write something? I am terribly new.

using namespace std;
int main() {
    int year;
    cout << "this is a leap year checker press enter.... \n";
    //I want to have a press enter command over here.
    cout << "put year here: \n";
    cin >> year;
    if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0))
       cout<<year<<" is a leap year";
    else
       cout<<year<<" is not a leap year";
       return 0;
}

CodePudding user response：

In order to read a whole line of input, and ignore it, you can use std::cin.ignore. For example:

#include <iostream>
#include <limits>

int main()
{
    std::cout << "Please press <ENTER> to continue: ";
    std::cin.ignore( std::numeric_limits<std::streamsize>::max(), '\n' );

    std::cout << "You have pressed <ENTER>.\n";
}

CodePudding user response：

any time you need to wait for enter just use getchar() function to wait for write char to console and press enter

CodePudding user response：

You can implement something like this as under:

#include <iostream>
#include <string>

void PressEnterToContinue(std::string text = "Press enter to continue...")
{
    std::cout << text;
    while (true)
    {
        char key = getchar();

        if (key == '\r') break;
    }
}

int main() 
{
    PressEnterToContinue();
}

Or if you want to press any key to continue, you can just do the following:

std::cout << "Press any key to continue..."; 
char key = getchar();