C++- Please solve TODO sections and match sample output. Demonstrate event-contr

Question

C++- Please solve TODO sections and match sample output.

Demonstrate event-controlled loop using boolean flag to

present a menu. Use nested decision structure to process

each choice including invalid response.

*/

#include<iostream>

#include<iomanip>

using namespace std;

const char QUIT = '0'; // constants for menu options

const char INPUT = '1';

const char PROCESS = '2';

const char OUTPUT = '3';

int main()

{

char userSelection; // input for menu choice

bool done; // flag for loop control

// TODO: Initialize the loop control variable (done).

// Think about what an appropriate value for 'done' would be.

// Are we done at the beginning of the program?

// TODO: Begin loop here. Test the loop control variable

// Do NOT test the userSelection variable

// display the menu

cout << endl

<< setw(25) << " Program Menu " << endl

<< setw(25) << "---------------------" << endl

<< setw(25) << "1 ...... Input " << endl

<< setw(25) << "2 ...... Process " << endl

<< setw(25) << "3 ...... Output " << endl

<< setw(25) << "0 ...... Quit Program" << endl

<< setw(25) << "---------------------" << endl;

// get user response

cout << setw(20) << "Enter option: ";

cin >> userSelection;

// TODO: Process menu responses using If-Then-Else-If.

// For each option, print appropriate message as shown

// in sample output below, including invalid choice.

// Also, be sure to use the provided constants when

// you are testing values.

// TODO: End loop here.

cout << " End Program - ";

}

/* Sample Program Interaction and Output

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: 1

Do INPUT stuff

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: 2

Do PROCESS stuff

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: 3

Do OUTPUT stuff

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: 4

Invalid choice, please try again.

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: q

Invalid choice, please try again.

Program Menu

---------------------

1 ...... Input

2 ...... Process

3 ...... Output

0 ...... Quit Program

---------------------

Enter option: 0

End Program - Press any key to continue . . .

*/

Explanation / Answer

#include <iostream>
#include <iomanip>
using namespace std;
const char QUIT = '0'; // constants for menu options
const char INPUT = '1';
const char PROCESS = '2';
const char OUTPUT = '3';
int main()
{
    char userSelection; // input for menu choice
    bool done; // flag for loop control
    // TODO: Initialize the loop control variable (done).
    // Think about what an appropriate value for 'done' would be.
    // Are we done at the beginning of the program?
    done = false;
    // TODO: Begin loop here. Test the loop control variable
    // Do NOT test the userSelection variable
    // display the menu
    while(!done) {
        cout << endl
             << setw(25) << " Program Menu " << endl
             << setw(25) << "---------------------" << endl
             << setw(25) << "1 ...... Input " << endl
             << setw(25) << "2 ...... Process " << endl
             << setw(25) << "3 ...... Output " << endl
             << setw(25) << "0 ...... Quit Program" << endl
             << setw(25) << "---------------------" << endl;
        // get user response
        cout << setw(20) << "Enter option: ";
        cin >> userSelection;
        // TODO: Process menu responses using If-Then-Else-If.
        // For each option, print appropriate message as shown
        // in sample output below, including invalid choice.
        // Also, be sure to use the provided constants when
        // you are testing values.
        // TODO: End loop here.
        if(userSelection == '1') {
           cout << "Do INPUT stuff" << endl;
       } else if(userSelection == '2') {
           cout << "Do PROCESS stuff" << endl;
       } else if(userSelection == '3') {
           cout << "Do OUTPUT stuff" << endl;
       } else if(userSelection == '0') {
           done = true;
       } else {
           cout << "Invalid choice, please try again." << endl;
       }
   }
    cout << " End Program - ";
}

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