c++ code using code blocks, please make sure it compiles. copy and paste with an

Question

c++ code using code blocks, please make sure it compiles. copy and paste with answers

This program is for practicing function calling and writing

When you see //---- that is where you need to add code

#include
#include

//This was used to get everything from keyboard as a string first, then
//convert them into the corresponding data type (int, double, etc) accordingly
//It is used to avoid the cin problem it may cause
#include

using namespace std;

//********** Function declaration *************************
//function #1: will simply display a menu on screen
//Note: for function declaration, all header must end with ;
void displayMenu();

//function #2: will take a user's name as input parameter and display, for example,
//'Welcome, John Smith.' on screen if user's name is John Smith
void welcomeMsg(string userName);

//function #3: takes an integer as input and return true if it's even number, otherwise
//return false
bool checkEven(int number);

//function #4: declare a function called 'computeAvg' here, it takes two double values
//as input parameter and will return the average of the two numbers
//----

//************ Function: main() ******************************
int main()
{
   int choice;         // Holds the user's menu choice
   string input = "";
    do
    {
        //call function #1 to display the menu on screen
        //----

        cout << "Enter your choice (1-4): ";
        getline(cin, input);
        stringstream inputStream(input);
        inputStream >> choice;

        //Choice validation while loop
        while (choice < 1 || choice > 4)
        {
            cout << "The only valid choices are 1-4. Please re-enter: ";
            cin >> choice;
        }

       if (choice != 4)      //Choice 4 is to quit. If user does not want to quit, proceed accordingly
       {
          switch (choice)
          {
    case 1: //is for function #2 - welcomeMsg(...)
                      {
                          string name;
                          cout << "What's your name: ";
                          getline(cin, name);
                          //call function #2 to display 'Welcome, John Smith.' on screen
                          //if user's name is John Smith
                          //----
                      }
             break;

    case 2: //is for function #3 - checkEven(...)
                     {
                        int num;
                        cout << "Enter an integer and I will tell you whether it's even or not: ";
                        getline(cin, input);
                        stringstream inputStream(input);
                        inputStream >> num;

                        //call function #3, if the number user entered is even, display a message
                        //'The number is even' on screen, otherwise display 'The number is odd'
                        if (//----)
                            cout << "The number is even" << endl;
                        else
                            //----
                      }
                   break;

    case 3: //is for function #4
                     {
                         double num1, num2;
                         cout << "Enter two numbers and I will compute their average " << endl;
                         getline(cin, input);
                         stringstream inputStream(input);
                         inputStream >> num1 >> num2;

                         //Declare a double variable called avg. Call function #4 by using
                         //num1, num2 as input arguments, save the result inside avg
                         //----
                         //----
                         cout << fixed << showpoint << setprecision(2);
                         cout << " The two number's average is: " << avg << endl;
                     }
                     break;
          }
     }
} while (choice != 4);

return 0;
}

//************ Function #1: displayMenu() ********************
void displayMenu()
{
cout << "************************************ ";
cout << " ASU CSE100 Lab #7 - Functions ";
cout << "1. Display Welcome Message ";
cout << "2. Check Even or Odd Integer ";
cout << "3. Compute Two Number's Average ";
cout << "4. Quit the Program ";
}

//************ Function #2: welcomeMsg() ****************************
//will take a user's name as input parameter and display, for example,
//'Welcome, John Smith.' on screen if user's name is John Smith
//Note: the header of the function does not end with ;
void welcomeMsg(string userName)
{
    //----
}

//************ Function #3: checkEven() ***********************************
//function #3: takes an integer as input and return true if it's even number
//otherwise it returns false
//Note: the header of the function does not end with ;
bool checkEven(int number)
{
    //----
    //----
}

//************ Function #4: computeAvg() ***********************************
//function #4: declare a function called 'computeAvg' here, it takes two double
//values as input parameter and will return the average of the two numbers

//method's header
//----
{
    //----
}

Explanation / Answer

#include<iostream.h>

#include<string.h>

#include<sstream.h>

using namespace std;

void displayMenu();

void welcomeMsg(string userName);

bool checkEven(int number);

double computeAvg(double,double);

int main()
{
   int choice;         // Holds the user's menu choice
   string input = "";
    do
    {
displayMenu(); // display the menu on screen

        cout << "Enter your choice (1-4): ";
        getline(cin, input);
        stringstream inputStream(input);
        inputStream >> choice;

        //Choice validation while loop
        while (choice < 1 || choice > 4)
        {
            cout << "The only valid choices are 1-4. Please re-enter: ";
            cin >> choice;
        }

       if (choice != 4)      //Choice 4 is to quit. If user does not want to quit, proceed accordingly
       {
          switch (choice)
          {
case 1:
string name;
                          cout << "What's your name: ";
                          getline(cin, name);
welcomeMsg(name);
   break;

case 2:
                        int num;
                        cout << "Enter an integer and I will tell you whether it's even or not: ";
                        getline(cin, input);
                        stringstream inputStream(input);
                        inputStream>>choice;

                        if (checkEven(num)==true)
                            cout << "The number is even" << endl;
                        else
cout<<"The number is odd<<endl;
   break;

case 3:
                         double num1, num2;
                         cout << "Enter two numbers and I will compute their average " << endl;
                         getline(cin, input);
                         stringstream inputStream(input);
                         inputStream >> num1 >> num2;

double avg;

avg=computeAvg(num1,num2);

                         cout << fixed << showpoint << setprecision(2);
                         cout << " The two number's average is: " << avg <<endl;
                     break;
          }
     }
} while (choice != 4);

return 0;
}

void displayMenu()
{
cout << "************************************ ";
cout << " ASU CSE100 Lab #7 - Functions ";
cout << "1. Display Welcome Message ";
cout << "2. Check Even or Odd Integer ";
cout << "3. Compute Two Number's Average ";
cout << "4. Quit the Program ";
}

void welcomeMsg(string userName)
{
cout<<"Welcome, "<<+username<<endl;
}

bool checkEven(int number)
{
if(number2== 0)

return true;

else

return false;
}

double computeAvg(double n1,double n2)

{

return((n1+n2)/2);
}

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