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 :)