File content as of revision 3:08df357719f2:

// A) original code committed (without delays)

// B) Yes, as the micro controller runs through the while loop it checks for active ststments.
//    this is done much faster than a person can racct to. also there may be possible bouncing on the switch.

// C) 1. Debounce, 2. capasitor, 3. timer, 4, delay, 5. possible clear screen

// D) See modified code below.

#include "mbed.h"     // Stephen Reidy; lab1

InterruptIn joystickDown(p12);   // joystick Down
InterruptIn joystickLeft(p13);   // joystick Left
InterruptIn joystickCenter(p14); // joystick Center
InterruptIn joystickUp(p15);     // joystick Up
InterruptIn joystickRight(p16);  // joystick Right
DigitalOut led(LED1);            // LED 1 digital out

int main()
{

    while(1) {
        if (joystickDown == 1) {
            printf( "joystickDown is active \r\n");
            wait(1);
        }

        if (joystickLeft == 1) {
            printf( "joystickLeft is active \r\n");
            wait(1);
        }

        if (joystickCenter == 1) {
            printf( "joystickCenter is active \r\n");
            wait(1);
        }

        if (joystickUp == 1) {
            printf( "joystickUp is active \r\n");
            wait(1);
        }

        if (joystickRight == 1) {
            printf( "joystickRight is active \r\n");
            wait(1);
        }
    }
}