Answer to Question #111249 in C for sara

Question

Q1. Create a struct called Invoice that a hardware store might use to represent an invoice
for an item sold at the store. An Invoice should include four data members—a part
number (type string), a part description (type string), a quantity of the item being
purchased (type int) and a price per item (type float). Your program should initialize the
four data members. In addition, it should calculate the invoice amount (i.e., multiplies the
quantity by the price per item), If the quantity is not positive, it should be set to 0. If the
price per item is not positive, it should be set to 0. Write a test program that demonstrates
struct Invoice’s capabilities.
Note: Perform this work using
1. 2d array
2. pointer to 2d arrays
3. design function for calculating the results by passing array to function by value and by
reference.

Answer 1

#include<iostream>
#include <string>
using namespace std;

class Invoice
{
public:
    Invoice( string, string, int, int );
    void setPartNumber( string );
    string getPartNumber();
    void setPartDescription(string);
    string getPartDescription();
    void setItemQuantity(int);
    int getItemQuantity();
    void setItemPrice(int);
    int getItemPrice();
    int getInvoiceAmount();
private:
    string partNumber;
    string partDescription;
    int itemQuantity;
    int itemPrice;
};
Invoice::Invoice( string number, string description, int quantity, int price )
{
    partNumber=number;
    partDescription=description;
    if(quantity>0)
        itemQuantity=quantity;
    else
    {
        itemQuantity=0;
        cout<<"Initial quantity was invalid."<<endl;
    }
    if(price>0)
        itemPrice=price;
    else
    {
        itemPrice=0;
        cout<<"Initial price was invalid."<<endl;
    }
}
void Invoice::setPartNumber( string number)
{
    if ( number.length() <= 25 )
        partNumber = number;
    if ( number.length() > 25 )
    {
        partNumber = number.substr( 0, 25 );
        cout << "Name \"" << number <<"\" exceeds maximum length (25).\n"<< "Limiting partNumber to first 25 characters.\n" << endl;
    }
}
void Invoice::setPartDescription(string description )
{
    if ( description.length() <= 25 )
        partDescription = description;
    if ( description.length() > 25 )
    {
        partDescription = description.substr( 0, 25 );
        cout << "Name \"" << description <<"\" exceeds maximum length (25).\n"<< "Limiting partDescription to first 25 characters.\n" << endl;
    }
}
void Invoice::setItemQuantity(int quantity )
{
    if(quantity>0)
        itemQuantity=quantity;
    else
    {
        itemQuantity=0;
        cout<<"Initial quantity was invalid."<<endl;
    }
}
void Invoice::setItemPrice(int price )
{
    if(price>0)
        itemPrice=price;
    else
    {
        itemPrice=0;
        cout<<"Initial price was invalid."<<endl;
    }
}
string Invoice::getPartNumber()
{
    return partNumber;
}
string Invoice::getPartDescription()
{
    return partDescription;
}
int Invoice::getItemQuantity()
{
    return itemQuantity;
}
int Invoice::getItemPrice()
{
    return itemPrice;
}
int Invoice::getInvoiceAmount()
{
    return itemQuantity*itemPrice;
}
int main()
{
    Invoice Invoice1("ed34","Screw Guage",2,30);
    Invoice Invoice2("e322","Screws",10,3);
    cout << "Invoice1's initial part number is: "<< Invoice1.getPartNumber()<< "\nand part description is: "<< Invoice1.getPartDescription()<<endl;
    cout<< "quantity per item is: "<< Invoice1.getItemQuantity()<< "\nprice per item is: "<< Invoice1.getItemPrice()<< endl;
    cout<<"Invoice1's total amount is: "<<Invoice1.getInvoiceAmount()<<endl<<endl;
    cout << "Invoice2's initial part number is: "<< Invoice2.getPartNumber()<< "\nand part description is: "<< Invoice2.getPartDescription()<<endl;
    cout<< "quantity per item is: "<< Invoice2.getItemQuantity()<< "\nprice per item is: "<< Invoice2.getItemPrice()<< endl;
    cout<<"Invoice2's total amount is: "<<Invoice2.getInvoiceAmount()<<endl;}