how do i exite a program with Ctrl+C

[atown282]

I can not figure out what code to use to allow a user to end my program in c++ by pressing ctrl+c can someone please help me?

[ypfz3TCk]

What operating system are you using? On linux Ctrl-D ends the program - not sure about windows.

[atown282]

visual studio 2008

[atown282]

im just having trouble with the coding part

[ypfz3TCk]

would you like to post the code you are having trouble with?

[atown282]

This is just my main. I left out all the functions I used. no need to take up space. but my if (ctrl+c) is the last code I have tried to use. I am currently all out of ideas.

#include <iostream>
#include <cstdlib>
#include <stdlib.h>  // You might be able to get away without this one.


using namespace std;

const int size = 24;

typedef bool BoardType[size][size];

// Function prototypes:

void display(BoardType Board, int & iteration);

bool Life(BoardType Board);

void populate(BoardType Board, BoardType Board2);

// A function prototype can't be used with an inline function (see below for function NumLiveNeighbors).  Just be careful to use it only after the function is defined.

int main()
   {
        int Iteration = 0; // needed here to count the use of the display function
        int cycle;
		int Ctrl=0; 
		int c=0;
        BoardType Board2;
        BoardType Board =
           {
                 {0,1,0,0,1,1,0,0,1,1,0,0,0,0,1,1,0,0,1,1,0,0,1,0,},
                  {1,0,1,1,0,1,0,1,0,1,0,1,0,1,1,1,1,0,0,1,0,1,1,1,},
                   {0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,0,},
                   {0,1,1,1,0,0,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,1,1,1,},
                   {1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,0,},
                   {1,0,1,0,1,0,1,1,1,0,1,0,1,0,1,0,1,0,1,0,1,1,1,1,},
                   {0,0,0,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,},
                   {0,0,1,0,1,1,1,1,1,1,0,1,0,1,1,1,1,0,0,0,0,1,1,1,},
                   {1,0,0,0,1,1,1,1,1,1,1,0,1,1,1,1,1,0,0,0,0,1,0,1,},
                   {1,0,1,0,1,0,0,0,0,0,1,0,1,1,1,1,1,1,0,1,0,1,0,1,},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,},
                   {0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,},
                   {0,0,0,0,1,1,1,1,0,1,0,1,1,1,1,1,0,0,0,1,0,1,1,1,},
                   {0,1,0,1,0,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,1,0,1,0,},
                   {1,1,1,1,1,1,0,0,0,0,1,0,1,0,1,0,0,0,0,0,1,1,1,1,},
                   {1,0,0,0,0,1,0,1,0,1,0,1,1,1,0,1,0,1,0,1,0,1,1,1,},
                   {0,0,0,0,1,1,1,1,1,0,1,0,1,0,1,1,1,1,0,1,0,1,0,1,},
                   {0,1,1,1,1,0,1,0,1,0,1,0,1,0,1,1,1,1,0,1,0,1,0,1,},
                   {1,1,1,1,1,0,1,0,1,0,1,1,1,1,1,0,0,0,1,0,0,0,0,0,},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,},
                   {0,1,1,1,0,0,0,0,0,1,0,1,0,1,0,1,0,0,0,1,0,1,0,1,},
                   {0,1,1,1,1,0,0,0,1,1,1,1,0,0,0,0,0,1,0,1,1,1,1,0,},
                   {1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,},
                   {0,1,0,0,1,1,0,0,1,1,0,0,0,0,1,1,0,0,1,1,0,0,1,0,},
           };
      
        cout << "Enter the number of generations to run." << endl;
        cin >> cycle;
        cout << "You will need to press a key between cycles" << endl;
        cout << "Press CTRL + C to exit at any time.";


	if (Ctrl + c)
	{
		std::exit(EXIT_FAILURE);
	}

         system("PAUSE");
        system("cls");
        display(Board, Iteration);
        cout << endl << endl << endl;
      
        for (int i = 1; i <= cycle; i++)
           {
                // If system("PAUSE") does not work with your version of Visual Studio
                // try the method of prompting the user to press Enter to go on, then
                 // read that keypress into a char variable.  Similarly, if system("cls")
                // does not work for you, you might be able to clear the screen by
                // outputting the correct number of endl's.
                system("PAUSE");        //creates the pause between generations
                system("cls");          // Clears the screen
                populate(Board, Board2);
                display(Board, Iteration);
           }
		
		
        return 0;
   }

[Lowest0ne]

I think Ctrl-C is an EOF, maybe try if (EOF = cin.get()) return 0;.

[atown282]

now it complies. but with I press Control c my file just keeps running.

[Lowest0ne]

Second thought, ctrl Z is EOF.

[atown282]

do you have any other ideas? I tried doing something like while (ctrl+c!==something) but i couldn't figure that out either

[ypfz3TCk]

line 63 cant compile. if (ctrl +c) has no meaning. to get it to work, try something simple like-
char input;
cin >> input;
bool status = false;
....if input valid, set bool status to true.

there are many ways of doing this. Good luck

[atown282]

Im not trying to be that guy that's looking for the answer but I burned myself out on this. is there anyway you could show me the full code to do it. Iv tried so many things I think I confused myself completely

[Athar]

You don't handle Ctrl+C yourself, that's done by the console.

[whitenite1]

@atown282

Here is a small program that I changed from checking for the ESC key, to looking for CTRL-C, to exit the program. Instead of ASCII 27, for ESC, it checks for ASCII 3, which is the code given with the CTRL-C combo. Hope it helps..

// CTRL-C.cpp : main project file.

#include <iostream>
#include <string>
#include <stdio.h>
#include <conio.h>

using namespace std;

int Function1(int func1)
{
	func1++;
	return func1;
}

int Function2(int func2)
{
	func2++;
	return func2;
}

int Function3(int func3)
{
	cout << "CTRL-C was pressed..\nEnding program.." << endl << endl;
	return func3;
}

int Function4(int func, string calling)
{
	cout << "Zeroing out " << calling << ".." << endl << endl;
	func=0;
	return func;
}

int main()
{
	char key;
	int call1=0,call2=0;
	do
	{
		cout << "Enter a '1', '2', or '0' character. Or press Ctrl-C to end program" << endl;
		key = _getch();
		switch(key)
		{
		case 49: //call to function 1
			{
				call1 = Function1(call1);
				cout << "call1 = " << call1 << endl;
				break;
			}
		case 50://call to function 2
			{
				call2 = Function1(call2);
				cout << "call2 = " << call2 << endl;
				break;
			}
		case 48://call to function 4
			{
				call1 = Function4(call1, "call1");
				call2 = Function4(call2, "call2");

				cout << "call1 now is " << call1 << " and call2 is " << call2 << " " << endl;
				break;
			}
		case 3:// Control-C is ASCII 3
			{
				Function3(key);
				break;
			}
		default:
			{
				cout << "** Error ** Only a 1, 2, 0 or Ctrl-C is recognized.." << endl << endl;
			}
		}
	}while (key!=3);
}