C++ need help with class

[dandkem]

Hello i am a beginner in c++ and i really need some help with my code. i keep getting 2 errors and im not sure how to fix them...
1. i keep getting that invoice2 is undeclared
2. expected ';' before "invoice2" (Each undeclared identifier is reported only once for each function it appears in.)

here my code

//.h file

#include <iostream>
#include <string>

using namespace std;

class invoice{

private:
string num;
string des;
int quantity;
int price;

public:
void setnum(string);
string getnum();

void setdes(string);
string getdes();

void setquantity(int);
int getquantity();

void setprice(int);
int getprice();

invoice();
invoice(string, string, int, int);


int getInvoiceAmount();






};


//cpp.file

#include "invoice.h"




invoice::invoice(string a, string b, int c, int d){
setnum(a);
setdes(b);
setquantity(c);
setprice(d);
}


void invoice::setnum(string a){
num=a;
}
string invoice::getnum(){
return num;
}

void invoice::setdes(string b){
des=b;
}
string invoice::getdes(){
return des;
}

void invoice::setquantity(int c){//loop until a positive number is assigned
quantity=c;

while(c<0){

if (c>=0)
quantity=c;

if(c<0){
cout << "ERROR: Quantity cannot be \nEnter Quantity: ";
cin>>c;
quantity=c;
}
}
}


int invoice::getquantity(){

return quantity;

}
void invoice::setprice(int d){//loop until a positve number is assigned
price = d;


while(d<0){

if (d>=0)
price=d;

if(d<0){
cout << "ERROR: PriceperItem cannot be negative.\nEnter PriceperItem: ";
cin>>d;
price=d;
}
}
}
int invoice::getprice(){

return price;

}
int invoice::getInvoiceAmount(){
return (getquantity()*getprice());
}


//main


#include "invoice.h"


int main(){

// create an Invoice object

invoice invoice( "12345", "Hammer", 100, 5 );


// display the invoice data members and calculate the amount
cout << "Part number: " << invoice.getnum() << endl;
cout << "Part description: " << invoice.getdes() << endl;
cout << "Quantity: " << invoice.getquantity() << endl;
cout << "Price per item: $" << invoice.getprice() << endl;
cout << "Invoice amount: $" << invoice.getInvoiceAmount() << endl;

// modify the invoice data members
invoice.setnum( "123456" );
invoice.setdes( "Saw" );
invoice.setquantity( -5 ); // negative quantity
invoice.setprice( 10 );
cout << "\nInvoice data members modified.\n\n";


// display the modified invoice data members and calculate new amount
cout << "Part number: " << invoice.getnum() << endl;
cout << "Part description: " << invoice.getdes() << endl;
cout << "Quantity: " << invoice.getquantity() << endl;
cout << "Price per item: $" << invoice.getprice() << endl;
cout << "Invoice amount: $" << invoice.getInvoiceAmount() << endl;

//Next Instance of Invoice Object
//Both quantity and price are negative

invoice invoice2("67890", "Drill", -8, -10);
cout << "\n\nNEXT INVOICE \n\n";

cout << "Part number: " << invoice2.getnum() << endl;
cout << "Part description: " << invoice2.getdes() << endl;
cout << "Quantity: " << invoice2.getquantity() << endl;
cout << "Price per item: $" << invoice2.getprice() << endl;
cout << "Invoice amount: $" << invoice2.getInvoiceAmount() << endl;





return 0;
}


any help would be great

[VictorN]

Hello i am a beginner in c++ and i really need some help with my code. i keep getting 2 errors and im not sure how to fix them...
1. i keep getting that invoice2 is undeclared

Then you have to declare it!

[2kaud]

When posting code, please use code tags as the code as shown is not easy to read. Go Advanced, select the code and click '#'.

[2kaud]

Having a class invoice and a variable invoice with the same name as the class is not a good idea! I would suggest having the class called Invoice (with a capital I) .

[dandkem]

Thanks alot it works now