Question

Write a program that does the following things: in C++

1 ) ask the user for 2 primary colors (red, blue, yellow) [should be in main]

2 ) determine the secondary color the 2 primarily colors make [should be in newColor function]

red + blue = purple

red + yellow = orange

blue + yellow = green

3 ) Print the following message

<color1> and <color2> makes <color3>

Answer 1

The Program in C++ for mixing of two primary colors to make third is as follows:

Comments are also included for better understanding.

#include <iostream>
using namespace std;

int main()
{
    // Variables
    string color_1, color_2;

    // Ask user for 2 primary colors
    cout << endl;
    cout << "Enter 1st primary color : ";
    cin >> color_1;
    cout << "The 2nd primary color is: ";
    cin >> color_2;

    // Format line break
    cout << endl;

    // Error checking, calculation, & Display.
    // Eliminating confusion between upper case and lower case.
    // define the result for mixer of two primary colors.
    if (color_1 == "red" || color_1 == "Red" || coior_1 == "RED")
    {
        if (color_2 == "blue" || color_2 == "Blue" || color_2 == "BLUE")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes purple.\n";
        }
        else if (color_2 == "yellow"  || color_2 == "Yellow" || color_2 == "YELLOW")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes Orange.\n";
        }
    }
    else if (color_1 == "blue" || color_1 == "Blue" || color_1 == "BLUE")
    {
        if (color_2 == "red" || color_2 == "Red" || color_2 == "RED")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes purple.\n";
        }
        else if (color_2 == "yellow" || color_2 == "Yellow" || color_2 == "YELLOW")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes green.\n";
        }
    }
    else if (color_1 == "yellow" || color_1 == "Yellow" || color_2 == "YELLOW")
    {
        if (color_2 == "red" || color_2 == "Red" || color_2 == "RED")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes orange.\n";
        }
        else if (color_2 == "blue" || color_2 == "Blue" || color_2 == "BLUE")
        {
            cout << color_1 << " and ";
            cout << color_2 << " makes green.\n";
        }
    }
    else
    {
        cout << "Neither " << color_1;
        cout << " nor " << color_2;
        cout << " is a prime color. ";
        cout << "\nRun the program and try again.\n";
        cout << "Remember a primary color is either Red,";
        cout << "Blue, or Yellow.\n";
    }

    // Formatting
    cout << endl << endl;

    // Terminate program
    return 0;
}