C++ Fill in the missing code: #include<iostream> #include<string> using namespac

Question

C++ Fill in the missing code:

#include<iostream>

#include<string>

using namespace std;

//void function that accepts one reference parameter: string

//function prompts the user for his/her name

void GetName(string& name);

//function that accepts three value parameter: int, int, int

//function returns true if the value n is between min and max, otherwise returns //false

bool IsValidInput(int n, int min, int max);

//void function accepts one reference parameter: int

//function displays the following menu and prompts the user for choice

//1) Enter your name

//2) Determine if a number is odd

//3) Square a number

//4) Exit

void DisplayMenu(int &choice);

//function that accepts one value parameter: int

//function returns true if n is odd, otherwise returns false

bool IsOdd(int n);

//void function that accepts one reference parameter: float

//function squares the value n

void SquareN(float &n);

int main()

{    int menuChoice = 0;

     string userName = " ";

     int num1 = 0;

     float num2 = 0.0;

     do

     {

     //call a function to display a menu (1 point)

     //call a function to validate that menuChoice is between 1 and 4 (1 pt)

     switch(menuChoice)

     {

     case 1:

           //call a function to get username (1 point)     

           //display userName

           break;

     case 2:

           //prompt user for num1    

           cout<<"Enter an integer: ";

           cin>>num1;

           //call a function to display whether or not num is odd ( 1 point)

           break;

     case 3:

           //prompt for num2

           cout<<"Enter a number: ";

           cin>>num2;

           //call a function to square num2 (1 point)     

           //display num2 squared

           break;

     case 4:

           cout<<"Good bye"<<endl;

     } //end switch

     }

     while(menuChoice!=4);

     return 0;

}

//function definitions (4 pts each)

Explanation / Answer

#include<iostream>
#include<string>
using namespace std;
//void function that accepts one reference parameter: string
//function prompts the user for his/her name
void GetName(string& name)
{
   cout<<"Please enter your name :";
   cin>>name;
}

//function that accepts three value parameter: int, int, int
//function returns true if the value n is between min and max, otherwise returns //false
bool IsValidInput(int n, int min, int max)
{
   if(n>=min&&n<=max)
       return true;
   return false;
}

//void function accepts one reference parameter: int
//function displays the following menu and prompts the user for choice
//1) Enter your name
//2) Determine if a number is odd
//3) Square a number
//4) Exit
void DisplayMenu(int &choice)
{
   cout<<" ========MENU========= 1) Enter your name 2) Determine if a number is odd 3) Square a number 4) Exit Enter your choice: ";
   cin>>choice;
}

//function that accepts one value parameter: int
//function returns true if n is odd, otherwise returns false
bool IsOdd(int n)
{
   if(n%2==1)
       return true;
   return false;
}

//void function that accepts one reference parameter: float
//function squares the value n
void SquareN(float &n)
{
   n=n*n;
}

int main()
{
   int menuChoice = 0;
   string userName = " ";
   int num1 = 0;
   float num2 = 0.0;
   bool check;
   do
   {
       //call a function to display a menu (1 point)
       DisplayMenu(menuChoice);
       //call a function to validate that menuChoice is between 1 and 4 (1 pt)
       check=IsValidInput(menuChoice, 1, 4);
       if(check==true)
       {
           cout<<"Input is valid"<<endl;
           switch(menuChoice)
           {
               case 1:
                   GetName(userName);                   //call a function to get username (1 point)
                   cout<<"Your Name is "<<userName<<endl;               //display userName
                   break;
               case 2:
                   //prompt user for num1
                   cout<<"Enter an integer: ";
                   cin>>num1;
                   check=IsOdd(num1);               //call a function to display whether or not num is odd ( 1 point)
                   if(check==true)
                       cout<<"Yes, Entered number is odd"<<endl;
                   else
                       cout<<"No, Entered number is even"<<endl;
                   break;
               case 3:
                   //prompt for num2
                   cout<<"Enter a number: ";
                   cin>>num2;
                   SquareN(num2);                   //call a function to square num2 (1 point)
                   cout<<"The squared number is "<<num2<<endl;               //display num2 squared
                   break;
               case 4:
                   cout<<"Good bye"<<endl;
           } //end switch
       }
   }while(menuChoice!=4);
   return 0;
}
//function definitions (4 pts each)

Output:-

========MENU=========
1) Enter your name
2) Determine if a number is odd
3) Square a number
4) Exit
Enter your choice: 1
Input is valid
Please enter your name :phani
Your Name is phani

========MENU=========
1) Enter your name
2) Determine if a number is odd
3) Square a number
4) Exit
Enter your choice: 2
Input is valid
Enter an integer: 5
Yes, Entered number is odd

========MENU=========
1) Enter your name
2) Determine if a number is odd
3) Square a number
4) Exit
Enter your choice: 2
Input is valid
Enter an integer: 4
No, Entered number is even

========MENU=========
1) Enter your name
2) Determine if a number is odd
3) Square a number
4) Exit
Enter your choice: 3
Input is valid
Enter a number: 5.2
The squared number is 27.04

========MENU=========
1) Enter your name
2) Determine if a number is odd
3) Square a number
4) Exit
Enter your choice: 4
Input is valid
Good bye

Process exited normally.
Press any key to continue . . .

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