Question

Create a command based menu using functions.

The structure should be as followed:

• Under the main menu
  • Submenu1
  • Submenu2
  • Exit
• SubMenu1
  • Choice1
  • Choice2
  • Back to main menu
• Submenu2
  • Choice1
  • Choice2
  • Back to main menu

• When I am in the submenus I want to know when I press a an option.
  • Example:
    • You have chosen choice 2 in submenu1
    • You have chosen choice 1 in submenu2
• If an option is chosen that is incorrect I want the output to say so
  • Example:
  • "Error: you didn't choose a valid option"
• It needs to be saved as a .PS1 file and submitted

Answer 1

C Program to implement submenu's using functions:

#include <stdio.h>
#include <stdlib.h>

//Sub Menu 1
void SubMenu1()
{
printf("\n ***** Sub Menu 1 ***** \n");
printf(" 1 - Choice 1 \n");
printf(" 2 - Choice 2 \n");
printf(" 3 - Back to Main Menu \n");
}

//Sub Menu 2
void SubMenu2()
{
printf("\n ***** Sub Menu 2 ***** \n");
printf(" 1 - Choice 1 \n");
printf(" 2 - Choice 2 \n");
printf(" 3 - Back to Main Menu \n");
}

//Main Menu
void MainMenu()
{
printf("\n ***** Main Menu ***** \n");
printf(" 1 - Submenu 1 \n");
printf(" 2 - Submenu 2 \n");
printf(" 3 - Exit \n");
}

int main()
{
int opt=0, opt1=0, opt2=0;

//Loop till user quit
while(opt != 3)
{
//Displaying main menu
MainMenu();
printf("\n\nYour Choice: ");
//Reading choice
scanf("%d", &opt);

//Switch
switch(opt)
{
case 1:
//Sub Menu 1
while(opt1 != 3)
{
//Printing sub menu 1
SubMenu1();
printf("\n\nYour Choice: ");
//Reading choice
scanf("%d", &opt1);

if(opt1 == 3)
break;

switch(opt1)
{
case 1: printf("\n You have chosen choice 1 in submenu1 \n"); break;
case 2: printf("\n You have chosen choice 2 in submenu1 \n"); break;
default: printf("\nError: you didn't choose a valid option\n");
}
}
break;

case 2:
//Sub Menu 2
while(opt2 != 3)
{
//Printing sub menu 2
SubMenu2();
printf("\n\nYour Choice: ");
//Reading choice
scanf("%d", &opt2);

if(opt2 == 3)
break;

switch(opt2)
{
case 1: printf("\n You have chosen choice 1 in submenu2 \n"); break;
case 2: printf("\n You have chosen choice 2 in submenu2 \n"); break;
default: printf("\nError: you didn't choose a valid option\n");
}
}
break;

case 3: return;

default: printf("\nError: you didn't choose a valid option\n");
}
}
}

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Sample Run: