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variables always not declared: so really confused!!

nhojrazc (2)
this is my code for the inventory system i am trying to code and it always says

D:\Users\uzer\Documents\CB\dawd\prototype.cpp||In function 'int main()':|
D:\Users\uzer\Documents\CB\dawd\prototype.cpp|170|error: 'addrec' was not declared in this scope|
D:\Users\uzer\Documents\CB\dawd\prototype.cpp|177|error: 'change_rec' was not declared in this scope|
D:\Users\uzer\Documents\CB\dawd\prototype.cpp|184|error: 'disp_rec' was not declared in this scope|
D:\Users\uzer\Documents\CB\dawd\prototype.cpp|191|error: 'isave' was not declared in this scope|
D:\Users\uzer\Documents\CB\dawd\prototype.cpp|199|error: 'del_rec' was not declared in this scope|
||=== Build finished: 5 errors, 0 warnings (0 minutes, 0 seconds) ===|

pls help me???...










code:
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#include<iostream>
#include<conio.h>
#include<cstring>
#include<fstream>
#include<iomanip>
#include<cctype>


using namespace std;

class inventory
{
private:
char item_name[20];
int serial_code[20];
float cost[20];
float qty[20];


public:

void addrec();
void change_rec();
void disp_rec();
void isave();
void del_rec();
int rec;

};







// \\==========================ADD RECORD=========================//


void inventory::addrec()
{

    cout<<"\t\t=========================\t\t"<<endl;
    cout<<"\t\t      || ADD RECORD ||   \t\t"<<endl;
    cout<<"\t\t=========================\t\t"<<endl;
    cout<<"----------------------------------------------";
    cout<<"\t\tENTER DETAILS TO BE RECORDED\t\t"<<endl;
    cout<<"----------------------------------------------";
    cout<<"\t\tPRODUCT NAME : \t\t";
    cin>>item_name[rec];
    cout<<"\t\tSERIAL CODE :  \t\t";
    cin>>serial_code[rec];
    cout<<"\t\tQUANTITY :   \t\t";
    cin>>qty[rec];
    cout<<"\t\tCOST : \t\t";
    cin>>cost[rec];
    rec++;


}

// \\=======================EDIT RECORD=========================//

void inventory::change_rec()
{
        char item_name[20];
        int serial_code[20];
        float cost[20];
        float qty[20];
        int i;
        cout<<"\t\t============================";
        cout<<"\t\t|ENTER PRODUCT SERIAL CODE| ";
        cout<<"\t\t============================";
        cout<<"SERIAL CODE:# ";
        cin>>serial_code[i];
        for (i = 0; i < rec; i++)
        {
            if (serial_code[i] == 0)
                {
                    cout<<"========================================"<<endl;
                    cout<<"Enter New Product Name: "<<item_name[i]<<endl;
                    cout<<"Enter New Serial Code: "<<serial_code[i]<<endl;
                    cout<<"Enter New Cost: "<<cost[i]<<endl;
                    cout<<"Enter New Quantity: "<<qty[i]<<endl;
                    cout<<"========================================"<<endl;
                    break;
                }
        }
        if (i == rec)
        {
            cout<<"Record not found?"<<endl;
        }




}

//  \\===============DISPLAY RECORD BOOK===============//

void inventory::disp_rec()
{
    int i;

    for (i = 0; i < rec; i++)
    {
        cout<<"=========PRODUCT INFORMATION========";
        cout<<"\t\tPRODUCT NAME : \t\t";
        cout<<item_name[i]<<endl;
        cout<<"\t\tSERIAL CODE :  \t\t";
        cout<<serial_code[i]<<endl;
        cout<<"\t\tQUANTITY :   \t\t";
        cout<<qty[i]<<endl;
        cout<<"\t\tCOST : \t\t";
        cout<<cost[i]<<endl;

    }

}

// \\====================SAVE RECORD=================//

void inventory::isave()
{
    ofstream save_rec;
    save_rec.open("recordbook.txt");

    save_rec.close ();
};

// \\====================Delete Record================//

void inventory::del_rec ()
{
int i, d;


     cout<<"\nPlease enter the item code:";
     cin>>i;
     for(d=0;d<i;d++)
    {
      if(serial_code[d]==i)
      {
        serial_code[d]=0;
        cout<<"\nThe item is deleted from the list.";

        break;
      }
    }
}

// \\=====================MENU OPTIONS===================//

int main ()
{
    int option;

        while (option != 6)
        {
            cout<<"\t\t=================OPTIONS============"<<endl;
            cout<<"\t\t~~~ Option 1 = ADD RECORD~~~"<<endl;
            cout<<"\t\t~~~ Option 2 = CHANGE RECORD~~~"<<endl;
            cout<<"\t\t~~~ Option 3 = DISPLAY RECORD~~~"<<endl;
            cout<<"\t\t~~~ Option 4 = SAVE RECORD~~~"<<endl;
            cout<<"\t\t~~~ Option 5 = DELETE RECORD ~~~"<<endl;
            cout<<"\t\t===================================="<<endl;
            cout<<"\t\tENTER CHOICE: "<<endl;
            cin>>option;

            switch (option)
            {
                case 1:
                    {

                    addrec();

                    }
                    break;
                case 2:
                    {

                    change_rec();

                    }
                    break;
                case 3:
                    {

                    disp_rec();

                    }
                    break;
                case 4:
                    {

                    isave();

                    }
                    break;

                case 5:
                    {

                    del_rec();

                    }
                    break;
                case 6:
                    {

                    }
                break;
                default:
                    {

                cout<<"Option unknown!";

                    }

            }
        }
        cin.get();
        return 0;
};
Last edited on
Peter87 (11222)
addrec and the other functions are member functions of class inventory, so to call the function you need an inventory object.

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// Create the inventory object somewhere at the start of you main function.
inventory inv;

// To call addrec() on the inventory object.
inv.addrec();
Last edited on
nhojrazc (2)
thanks peter87!!!! my system finally run but something is wrong again with my code.....when i chose number 1(enter product name)and try to input details it always jumped to "cost" im having alot of trouble finding out the problem..it seems to be endless.............

anyone can tell me how to correct this

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#include<iostream>
#include<conio.h>
#include<cstring>
#include<fstream>
#include<iomanip>
#include<cctype>


using namespace std;

class inventory
{
private:
char item_name[20];
int serial_code[20];            // declaration of variables
float cost[20];
float qty[20];
float invent[50];

public:

void addrec();
void change_rec();
void disp_rec();
void isave();
void del_rec();
int rec;

};



// \\==========================ADD RECORD=========================//


void inventory::addrec()
{
    char item_name[20];
    int serial_code[20];
    float cost[20];
    float qty[20];


    cout<<"===================";
    cout<<"|| ADD RECORD ||";
    cout<<"===================";
    cout<<"\n\n-----------------------------";
    cout<<"\n\nENTER DETAILS TO BE RECORDED";
    cout<<"\n\n-----------------------------\n";
    cout<<"PRODUCT NAME : ";
    cin>>item_name[rec];
    cout<<"SERIAL CODE :  \n";
    cin>>serial_code[rec];
    cout<<"QUANTITY : \n";
    cin>>qty[rec];
    cout<<"COST : ";
    cin>>cost[rec];
    rec = rec + 1;
    cin.ignore ();


};

// \\=======================EDIT RECORD=========================//

void inventory::change_rec()
{
        char item_name[20];
        int serial_code[20];
        float cost[20];
        float qty[20];
        int i;
        cout<<"============================\n";
        cout<<"|ENTER PRODUCT SERIAL CODE| \n";
        cout<<"============================\n";
        cout<<"SERIAL CODE:# ";
        cin>>serial_code[i];
        for (i = 0; i < rec; i++)
        {
            if (serial_code[i] == 0)
                {
                    cout<<"========================================";
                    cout<<"Enter New Product Name: "<<item_name[i]<<endl;
                    cout<<"Enter New Serial Code: "<<serial_code[i]<<endl;
                    cout<<"Enter New Cost: "<<cost[i]<<endl;
                    cout<<"Enter New Quantity: "<<qty[i]<<endl;
                    cout<<"========================================";
                    break;
                }
        }
        if (i == rec)
        {
            cout<<"Record not found?"<<endl;
        }

        getch();


};

//  \\===============DISPLAY RECORD BOOK===============//

void inventory::disp_rec()
{
    int i;

    for (i = 0; i < rec; i++)
    {
        cout<<"=========PRODUCT INFORMATION========";
        cout<<"PRODUCT NAME : \n";
        cout<<item_name[i];
        cout<<"SERIAL CODE :  \n";
        cout<<serial_code[i];
        cout<<"QUANTITY :   \n";
        cout<<qty[i];
        cout<<"tCOST : \n";
        cout<<cost[i];

    }
    getch();
};

// \\====================SAVE RECORD=================//

void inventory::isave()
{
    ofstream save_rec;
    save_rec.open("recordbook.txt");

    save_rec.close ();
};

// \\====================Delete Record================//

void inventory::del_rec ()
{
int i, d;


     cout<<"\nPlease enter the item code: ";
     cin>>i;
     for(d = 0;d < i;d++)
    {
      if(serial_code[d]==i)
      {
        serial_code[d]=0;
        cout<<"\nThe item is deleted from the list.";

        break;
      }
    }
    getch();
};


// \\=====================MENU OPTIONS===================//

int main ()
{
    inventory inv;
    int option;

        while (option != 6)
        {
            cout<<"\t\t=================OPTIONS============\n";
            cout<<"\t\t ~~~ Option 1 = ADD RECORD     ~~~\n";
            cout<<"\t\t ~~~ Option 2 = CHANGE RECORD  ~~~\n";
            cout<<"\t\t ~~~ Option 3 = DISPLAY RECORD ~~~\n";
            cout<<"\t\t ~~~ Option 4 = SAVE RECORD    ~~~\n";
            cout<<"\t\t ~~~ Option 5 = DELETE RECORD  ~~~\n";
            cout<<"\t\t====================================\n";
            cout<<"ENTER CHOICE: ";
            cin>>option;

            switch (option)
            {
                case 1:
                    {

                    inv.addrec();

                    }
                    break;
                case 2:
                    {

                    inv.change_rec();

                    }
                    break;
                case 3:
                    {

                    inv.disp_rec();

                    }
                    break;
                case 4:
                    {

                    inv.isave();

                    }
                    break;

                case 5:
                    {

                    inv.del_rec();

                    }
                    break;
                case 6:
                    {

                    }
                break;
                default:
                    {

                cout<<"Option unknown!";

                    }
                    break;

            }
            getch();
        }
        cin.get();
        return 0;
}
Last edited on
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