paint program program help I have started the program but need some help with the roo

[1873coolkid]

here is the scenario for the program:

A local interior decorator has asked you to design a program in C to estimate the cost of painting a room. The decorator needs to enter the height of the room (between 2 and 6 meters), then the length of all four walls (minimum 1 meter; maximum 25 meters). The program should then calculate the total area of the room.

The program should allow a choice of three paints:
• Luxury quality which costs £1.75 per square meter
• Standard quality which costs £1.00 per square meter
• Economy quality which costs £0.45 per square meter

The decorator should also be able to choose to use undercoat paint if required, which costs an addition £0.50 per square meter.

All inputs need to be validated to prevent erroneous values being entered and your program needs to provide clear, onscreen help to assist the user.

I have started the program but need some help with the undercoat, paint selection, the area of the room and the total.

Here is my programming code:

// The paint problem
//
#include <iostream>
using namespace std;
//**********************************
int check_height(float height)
{
    if ((height < 2.0) || (height > 6.0))
    {
        cout << "Height must be between 2 and 6 \n";
        return 0;
    }
    return 1;
}
//**********************************
int check_length(float length)
{
    if ((length < 1.0) || (length > 25.0))
    {
        cout << "Height must be between 1 and 25 \n";
        return 0;
    }
    return 1;
}
//**********************************
void area(float& wall_area, float* height, float*length)
{
    cout << "Area of all four walls is = " << (height[0] * length[0]) << "\n";
    wall_area = height[0] * length[0];
}
 
//**********************************
void get_room_dim(float* height, float* length)
{
    int height_ok[4]; // 1 indicates height > 2 and < 6
    int length_ok[4]; // 1 indicated length > 1 and < 25
    height_ok[0] = 0;
    while (height_ok[0] == 0)
    {
        //**********************************************//
        cout << "Please enter height of all four walls 1 between  2 to 6 \n";
        cin >> height[0];
        height_ok[0] = check_height(height[0]);
        if (height_ok[0] != 1)
        {
            cout << "Height = " << height[0] << "\n";
            cout << "It must be between 2 and 6 \n";
        }
    }
    cout << "**********************************************"<<
    length_ok[0] = 0;
    while (length_ok[0] == 0)
    {
        cout << "Please enter length of all four wall 1 between  1 to 25 \n";
        cin >> length[0];
        length_ok[0] = check_length(length[0]);
        if (length_ok[0] != 1)
        {
            cout << "Length = " << length[0] << "\n";
            cout << "It must be between 1 and 25 \n";
        }
    }
}
int main()
{
    float height[4], length[4];
    float wall_area;
    cout << " ********************************** Quotations******************************* \n";
    cout << "Hello, new customer \n";
    get_room_dim(height, length);
    area(wall_area, height, length);
    return 0;
}

Question:
how do I add make the program add a undercoat selection, a paint selection I also want the program to calculate the height, length and area of the room.

[weaknessforcats]

write a function to ask for the undercoat selection and have the function return a value that you store in a variable in main(). You can use the variable in the program to make you undercoat check.

Write a function that returns the area of the room. Use arguments for the length, width, an height of the room. Store the result in a variable in main(). Use it as needed elsewhere in the program.