c++: getchar() doesn't work on conditional control statement

[windscar]

Hello Everybody!

I am a beginner that try to learn C++ programming. I work in Linux Ubuntu Karmic Koala (9.10) environment.

I got a problem with getchar(). The function works well in a simple program. But when I use it in while (cond.) and switch (var.) , the function doesn't work, it doesn't even ask me to input character (including "\n"). Or maybe there are other reasons why getchar() doesn't work.

I am sorry if I repost the same question. But I already searched on Internet but I still can't find the answer. So I decided to ask this problem to this forum.

Here the code:

#include <ncurses.h>
#include <iostream>
	using namespace std;
#include <stdlib.h>

void menu();

int main() {
	int stop(0);
	int choice;
	
	while (stop == 0) {
		menu();
		cout << "Input: ";
		cin >> choice;
		switch (choice) {
			case 1  : cout << "press any key ...";
				      getchar();
				      cout << endl << endl;
				      break;
			case 2  : stop = 1;
				      break;
			default : cout << "Prompt Error..." << endl << endl;
				      break;
		}
	}
	return 0;
}

void menu () {
	cout << "Menu: \n";
	cout << "1. Keep looping" << endl;
	cout << "2. Stop and quit" << endl;
}

Can somebody help me and explain why getchar() doesn't work?

Thank you,
Wind Scar

[windscar]

Hello everybody,

Finally with some experiments, I can make the getchar() works as my expectation. By putting getchar() and cin.get() together. So, my code becomes like this:

#include <ncurses.h>
#include <iostream>
	using namespace std;
#include <stdlib.h>

void menu();

int main() {
	int stop(0);
	int choice;
	
	while (stop == 0) {
		menu();
		cout << "Input: ";
		cin >> choice;
		switch (choice) {
			case 1  : cout << "press ENTER ...";
				  getchar();
				  cin.get();
				  cout << endl << endl;
				  break;
			case 2  : stop = 1;
				  break;
			default : cout << "Prompt Error..." << endl << endl;
				  break;
		}
	}
	return 0;
}

void menu () {
	cout << "Menu: \n";
	cout << "1. Keep looping" << endl;
	cout << "2. Stop and quit" << endl;
}

It does work! Anyway, if you other better solutions, I'll appreciate it if you share it :)