I'm having a problem with method declaration. I'm really new to C++ so I was hoping somebody could help. I'm including my header and part of. my source file
#ifndef HEADER_H
#define HEADER_H
#include <fstream>
using namespace std;
class employee
{
public:
void readData(ifstream & inf);
void Compute (int bp);
void print (ofstream & outf) const;
employee();
private:
int ID;
int Job_class;
int Years;
int Ed;
float sal;
};
#endif
Now the source file, I'm getting the error at void employee :: readData(ifstream&inf)
Member Declaration not found. What am I missing here
#include <iostream>
#include <fstream>
#include <iomanip>
#include "employee.h"
using namespace std;
void employee ::readData(ifstream& inf)
{
inf >> ID >> Job_class >> Years >> Ed;
Related
I'm still a noobie in c++ so I am not to skilled in debugging yet. Just trying to figure out how to fix this compilation error.
CruiseShip.cpp:11: error: expected ‘)’ before ‘n’
CruiseShip.cpp
#include "CruiseShip.h"
#include "Ship.h"
#include <iostream>
using namespace std;
Ship s;
int passengers;
CruiseShip(string n, string y, int p) : Ship(n,y)
{
passengers=p;
}
void print()
{
cout<<"Name: "<<s.getName()<<"\nMaximum passengers:"<<passengers<<endl;
cout<<"-------------------------"<<endl;
}
CruiseShip.h
#ifndef CRUISESHIP_H
#define CRUISESHIP_H
#include "Ship.h"
#include <string>
using namespace std;
//class Ship;
class CruiseShip:public Ship{
private:
int passengers;
Ship::Ship s;
public:
CruiseShip(string, string, int);
virtual void print();
};
#endif
Ship.h
#ifndef SHIP_H
#define SHIP_H
#include <string>
using namespace std;
class Ship{
private:
string name;
string built;
public:
Ship();
Ship(string, string);
string getName();
string getBuilt();
virtual void print();
};
#endif
You have 3 errors:
1 and 2. You don't declare print and CruiseShip (The constructor) as part of the class CruiseShip when you define them. You need to:
CruiseShip::CruiseShip(string n, string y, int p) : Ship(n,y) {
virtual void CruiseShip::print() {
3, you dont have a namespace Ship so this is unnecessary:
Ship::Ship s; // This only needs to be Ship s <- NameSpace::ObjectType nameOfObject;
After this it will compile http://ideone.com/wJ6mPO. It will not link however, because you have undefined references to all of the functions you have yet to define.
I'm trying to reference an object in a function and it is giving me an "Object is inaccessible" error. Here is the header and cpp file in question.
customer header file below. I've put the object declaration at the bottom.
#pragma once
#include "bankAccount.h"
#include "checkingAccount.h"
#include "savingsAccount.h"
#include "address.h"
using namespace std;
class customer {
public:
customer(void);
customer(string,string);
~customer(void);
void setName(string n);
string getName();
void withdrawChecking(double);
void wihdrawSavings(double);
double depositSavings(double);
string print();
private:
string name
checkingAccount myChecking;
savingsAccount mySavings;
};
Here is the cpp file. I've bolded the problem statement.
#include "customer.h"
#include "checkingAccount.h"
customer::customer(void){
}
customer::customer(string n, string ac){
name = n;
mySavings.setAccount(ac);
myChecking.setAccount(ac);
}
void customer::setName(string n){
name = n;
}
string customer::getName(){
return name;
}
void withdrawChecking(double w){
myChecking.withdrawChecking(w);
}
So what is wrong with this last statement and my header?
Sorry for bad styling... first time posting a question.
You're missing a customer on the front of withdrawChecking. It should be:
void customer::withdrawChecking(double w)
I've got the problem with following code. It should get the object parameters from the txt file. Of course to get enum values correctly I've made this simple getline() function. I'm keep getting errors which I've tried to repair, but I still have no idea what's wrong. VC says that 'no instance of overloaded function getline matches the argument list'.
My code:
CKomputer.cpp
#include <iostream>
#include <cstdio>
#include <string>
#include <fstream>
#include "CKomputer.h"
#include "Procesor.h"
#include "KartaDzwiekowa.h"
#define TESTPR1
using namespace std;
void Komputer::pobierz(string nazwa)
{
#ifdef TESTPR1
cout<<"Uruchomiono metode pobrania stanu obiektu Komputer z pliku"<<endl;
#endif
ifstream plik_wejsciowy;
plik_wejsciowy.open(nazwa+".txt");
int zastos;
getline(plik_wejsciowy,linia);
zastos=atoi(linia.c_str());
zastosowanie=Komputer::zastosowanie(zastos);
plik_wejsciowy >> nazwa_komputera >> ram >> ile_kart_dzwiekowych >> zastos;
procesor.wczytaj(plik_wejsciowy);
if (ile_kart_dzwiekowych>0)
{
for (int i=0;i<ile_kart_dzwiekowych;i++)
karta_dzwiekowa[i].wczytaj(plik_wejsciowy);
}
plik_wejsciowy.close();
}
CKomputer.h
#pragma once
#include <stdlib.h>
#include <iostream>
#include <string>
#include <fstream>
#include "UrzadzenieElektroniczne.h"
#include "Procesor.h"
#include "KartaDzwiekowa.h"
using namespace std;
enum zastosowanie{biznes, gaming, grafika, programowanie};
class Komputer: public UrzadzenieElektroniczne
{
private:
Procesor procesor;
KartaDzwiekowa *karta_dzwiekowa;
protected:
string nazwa_komputera;
int ram;
int ile_kart_dzwiekowych;
public:
Komputer();
Komputer(string nazwa_komputera2, int ram2, int ile_kart_dzwiekowych2);
Komputer(const Komputer& k);
Komputer(int ilosc_kart);
~Komputer();
static int ile_Komputerow;
static int licz_ile_Komputerow();
void komp_info();
void wlaczenieurz();
void zapisz(string nazwa);
void pobierz(string nazwa);
zastosowanie zastos;
};
I really don't understand how to fix this redefinition error.
COMPILE+ERRORS
g++ main.cpp list.cpp line.cpp
In file included from list.cpp:5:0:
line.h:2:8: error: redefinition of âstruct Lineâ
line.h:2:8: error: previous definition of âstruct Lineâ
main.cpp
#include <iostream>
using namespace std;
#include "list.h"
int main() {
int no;
// List list;
cout << "List Processor\n==============" << endl;
cout << "Enter number of items : ";
cin >> no;
// list.set(no);
// list.display();
}
list.h
#include "line.h"
#define MAX_LINES 10
using namespace std;
struct List{
private:
struct Line line[MAX_LINES];
public:
void set(int no);
void display() const;
};
line.h
#define MAX_CHARS 10
struct Line {
private:
int num;
char numOfItem[MAX_CHARS + 1]; // the one is null byte
public:
bool set(int n, const char* str);
void display() const;
};
list.cpp
#include <iostream>
#include <cstring>
using namespace std;
#include "list.h"
#include "line.h"
void List::set(int no) {}
void List::display() const {}
line.cpp
#include <iostream>
#include <cstring>
using namespace std;
#include "line.h"
bool Line::set(int n, const char* str) {}
void Line::display() const {}
You need to put include guards in your headers.
#ifndef LIST_H_
#define LIST_H_
// List.h code
#endif
In list.cpp, you are including both "line.h" and "list.h". But "list.h" already includes "line.h" so "list.h" is actually included twice in your code. (the preprocessor is not smart enough to not include something it already has).
There are two solutions:
Do not include "list.h" directly in your list.cpp file, but it is a practice that does not scale: you have to remember what every of your header file includes and that will be too much very quickly.
use include guards, as explained by #juanchopanza
You are including "line.h" twice, and you don't have include guards in your header files.
If you add something like:
#ifndef LINE_H
#define LINE_H
... rest of header file goes here ...
#endif
to your header files, it will all work out fine.
I have tried every combination of #include statements that I can think of, and nothing is working. I am trying to write a basic inheritance program but i keep getting the error error: expected class-name before '}' token and I just do not know what to do about it anymore. I've tried having my main() include the .cpp file of the Executive class, however this error shows up. The program includes 5 types of employees all inherited from the Employee class, and I'm assuming that they are all the same error:
#include <iostream>
#include <string>
#include "Employee.cpp"
#include "Manager.cpp"
#include "Executive.cpp"
#include "Technical.cpp"
#include "Software.cpp"
#include "Test.cpp"
using namespace std;
int main()
{
Employee emp[3];
Executive emp0("John", "Doe", "VP", 100000.0, 1000000.0, 2000.0);
Software emp1("Vincent", "Giuliana", "Project Leader", 150000.0, 200000.0, 1000.0);
Test emp2("Lauren", "Wallis", "Overseer of Testing", 95000, 115000);
emp[0] = emp0;
emp[1] = emp1;
emp[2] = emp2;
for(int i=0; i<3; i++)
emp[i].displayInformation();
emp0.displayInformation();
emp1.displayInformation();
emp2.displayInformation();
return 0;
}
My Employee.h header file is as follows:
#ifndef EMPLOYEE_H_INCLUDED
#define EMPLOYEE_H_INCLUDED
#include <string>
#include <iostream>
using namespace std;
class Employee
{
private:
string fName, lName, jobTitle;
double baseSalary, salary;
public:
Employee();
Employee(string fName, string lName, string jobTitle, double baseSalary);
void calculateSalary(double baseSalary);
void displayName();
void displayBSalary();
void displayJobTitle();
void displayInformation();
...
getters
...
...
setters
...
};
#endif // EMPLOYEE_H_INCLUDED
My Employee.cpp is:
#include <string>
#include <iostream>
#include "Employee.h"
using namespace std;
Employee::Employee()
{
fName = "";
lName = "";
jobTitle = "";
baseSalary = 000000;
}
...
void Employee::setBSalary(double bs) //sets base salary as parameter
{
baseSalary = bs;
}
The top of the Executive.h header class:
#ifndef EXECUTIVE_H_INCLUDED
#define EXECUTIVE_H_INCLUDED
#include <string>
#include <iostream>
//#include "Employee.h"
using namespace std;
class Executive : public Employee
{
private:
string fName, lName, jobTitle;
double baseSalary, salary, bonus, stockOption;
public:
...
};
#endif // Executive_H_INCLUDED
And last but not least, the Executive.cpp file...
#include
#include
#include "Executive.h"
using namespace std;
Executive::Executive()
{
fName = fN;
lName = lN;
jobTitle = jt;
baseSalary = bs;
bonus = b;
stockOption = so;
}
...
void Executive::setSO(double so) //sets stock option as parameter
{
stockOption = so;
}
I think that I have tried to include each header in each file and still, nothing. Any help would be appreciated, and I thank anyone very much in advance!
You must
#include "Employee.h"
in Executive.h, because the compiler must see the declaration of Employee, when a class inherits from it. So, just remove the comments from the #include