Thread: Set function not printing

Hi I am creating an invoice class to print the results of a virtual shop invoice.
The program as far as the compiler is concerned is correct, but I am getting no output from the functions when I call them. What silly error am I making? here is the code:

Code:

#include <iostream>

using std::cout;
using std::endl;
using std::cin;

#include <string>

using std::string;

class Invoice
{
public:
    Invoice( string, string, int, int )
    {
       string pnum;
       string pdisc;
       int initquan;
       int initppi;
       
       pNumber = pnum;
       pDisc = pdisc;
       quant = initquan;
       ppi = initppi;
    }
    
    // getter functions
    string getPrtNum()
    {
       return pNumber;
    }
    
    string getPrtDisc()
    {
       return pDisc;
    }
    
    int getQuant()
    {
       return quant;
    }
    
    int getPpi()
    {
       return ppi;
    }
    
    int getInvoiceAmount()
    {
       return quant * ppi;
    }
    
    // setter functions
    string setPrtNum ( string pn )
    {
       pn = "12121\n12141\n14215\n14214";
       pNumber = pn;
       return pn;
    }
    
    string setPrtDisc ( string pd )
    {
       pd = "BOOK\nPENCIL CASE\nPEN SET\nSTAPLER";
       pDisc = pd;
       return pd;
    }
    
    int setQuant ( int qu )
    {
       qu = 2, 3, 1, 1;
       quant = qu;
       return qu;
    }
    
    int setPpi ( int pi )
    {
       pi = 499, 250, 899, 250;
       ppi = pi;
       return pi;
    }
    
private:
    string pNumber;	// part number
    string pDisc;        // part discription
    int quant;          // quanity
    int ppi;	            // price per item
    
};

// main function - driver //////////////////////////////////////////////////////
//
int main ( void )
{
    Invoice in ( "", "", 0, 0 );
 	 
     cout << "INVOICE CLASS RESULTS:\n\n";
     in.setPrtNum("");
     in.getPrtNum(); 	 
	 
    cin.get();  // freeze console window
    
    return 0;   // indicate program ended sucsessfully
}

EDIT: Sorry, ive figured it out. I really should wake up and look at my code again before I panic! I forgot to send the getFunc() to cout to read the output. Sorry to waste a thread on my utter stupidiy! There, I saved you all the effort of pointing out a silly mistake. Thanks anyways