C++ Write functions to do the following. Do not change the function signature. P

ID: 3668581 • Letter: C

Question

C++ Write functions to do the following. Do not change the function signature. Please write the functions, using the given function signature and specifications. The main function must display a simple menu as follows: Welcome to my program! Please choose one of the following: (a) Find the largest of a list of positive numbers (-1 to quit). (b) Given a positive number, display the number of even, odd and zero digits in the number. (c) quit this program. Based on what the user picks, use a switch or an if statement and output the corresponding answer. This menu should be in a loop so it continues to display after each turn until the user enters ‘c’ to quit.

Explanation / Answer

//header files
#include <iostream>
#include <string>

using namespace std;

// function prototypes
int largest();
void numberCount (int number, int &oddCount, int &evenCount, int &zeroCount);

// main function
int main()
{
    // declare variables
   int number = 0;
    int oddCount;
    int evenCount;
    int zeroCount;
    string menu;


    cout << "Welcome to my program!" << endl << endl;

    do
    {
       // selecting choice
        cout << "Please choose one of the following options." << endl;
        cout << "(a) Find the largest of a list of positive numbers. (-1 to quit)." << endl;
        cout << "(b) Give a positive number, display the number of even, odd, and zero digits in the number." << endl;
        cout << "(c) Quit this program." << endl;
        cout << "Your choice: ";
        cin >> menu;

        if (menu == "a" || menu == "A" )
        {
           // largest number
            number = largest();

            cout << endl;

           // display largest Number
            cout << "The highest number you entered was: " << number << endl;
        }

        else if (menu == "b" || menu == "B")
        {
            numberCount (number, oddCount, evenCount, zeroCount);
        }

        cout << endl;
    }

    while (menu != "c" || menu != "C");


    return 0;
}

// finding largest number
int largest()
{
   // declare variables
    int num = 0;
    int largestNumber = 0;
    int sentinel = -1;

   // asking user to entr positive number
    cout << "Please enter a positive integer. Enter -1 to quit." << endl;

    do
    {
        cout << "Enter number: ";
        cin >> num;

       // checking whether num is greater than l number
        if (num > largestNumber)
        {
            largestNumber = num;
        }
    }

    while (num != sentinel);


    return largestNumber;
}

// counting number
void numberCount (int number, int &oddCount, int &evenCount, int &zeroCount)
{
    cout << "Please enter any positive integer: ";
    cin >> number;

    do
    {
        number = number % 10;

        if (number == 0)
        {
            zeroCount = zeroCount + 1;
        }
        else if (number % 2 == 0)
        {
            evenCount = evenCount + 1;
        }
        else if (number % 2 != 0)
        {
            oddCount = oddCount + 1;
        }

        number = number / 10;

    }
    while (number != ' ');

       // display result
    cout << "Number of zeros: " << zeroCount << endl;
    cout << "Number of evens: " << evenCount << endl;
    cout << "Number of odds: " << oddCount << endl;
}

Sample output

Enter number: 5
Enter number: -1

The highest number you entered was: 13

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