File content as of revision 0:386952ad9742:

// A simple menu program, displaying on the mbed Application Board
// Ideas on how to eliminate the 6 warnings would be appreciated!
//   Bo Barry 1/11/2014        (My first 'published' program)


#include "mbed.h"
DigitalOut myled(LED1);
#include "C12832_lcd.h"
C12832_LCD lcd;
#include <stdio.h>
 
void load_menu(void);
void sum(void);
void rest(void);
 
int main(void)
{
   
    lcd.locate(0,2);
    lcd.cls();
    lcd.printf("mbed Application Board!");
    wait(2);
    load_menu();
    return 0;
}

void load_menu(void)
{
    int choice;
    do
    {
        lcd.locate(0,2);
        lcd.cls();
        lcd.printf("Menu\n");
        lcd.printf("1. Sum   2. Rest  3. Exit\n");
        scanf("%d",&choice);
 
        switch(choice)
        {
            case 1: sum();
                break;
            case 2: rest();
                break;
            case 3: 
                lcd.locate(0,2);
                lcd.cls();
                lcd.printf("Quitting program!");
                exit(0);
                break;
            default: lcd.printf("Invalid choice!");
                break;
        }
 
    } while (choice != 3);
 
}
 
void sum(void)
{
    int num1, num2;
 //  int ch;
     
    printf("Enter number 1: ");
    scanf("%d",&num1);
    lcd.locate(0,2);
    lcd.cls();
    printf("Enter number 2: ");
    scanf("%d",&num2);
    lcd.locate(0,2);
    lcd.cls();
    printf("The sum of the numbers was: %d",num1+num2);
    wait(2);
 
  // Flushes input buffer from the newline from scanf() 
   // while ( (ch = getchar()) != '\n' && ch != EOF) ;
    lcd.locate(0,2);
    lcd.cls();
    printf("Press ENTER to continue.");
  //  while ( (ch = getchar()) != '\n' && ch != EOF);
  return;
}       
 
void rest(void)
{
    lcd.locate(0,2);
    lcd.cls();
 //   int ch;
    printf("Sleepy sleepy... zZZzZzZz\n");
    wait(2);
    printf("You now feel awake again!");
    wait(2);
   // Flushes input buffer 
  //  while ((ch = getchar()) != '\n' && ch != EOF) ;
 
    lcd.locate(0,2);
    lcd.cls();
    printf("Press ENTER to continue.");
  //  while ((ch = getchar()) != '\n' && ch != EOF);
 
    return;
}