[SOLVED] Classes and operator overloading C++

[jspolen]

Hi I have a problem with a class I named Person that is in the file Person.cpp


#include <iostream>
#include <string>
#include "Person.h"

Person::Person( int s, const string & n )
: ssn( s ), name( n )
{ }

const string & Person::getname( ) const
{ return name; }

int Person::getSsn( ) const
{ return ssn; }

void Person::print( ostream & out = cout ) const
{ out << "[ " << ssn << ", " << name << " ]"; }

bool Person::equals( const Person & rhs ) const
{ return ssn == rhs.ssn; }

bool Person::operator==( const Person & rhs ) const
{ return equals( rhs ); }



The header file is Person.h and looks like this


#ifndef PERSON_H
#define PERSON_H

class Person
{
public:
Person( int s, const string & n = "" );
const string & getname( ) const;
int getSsn( ) const;
void print( ostream & out = cout )const;
bool equals( const Person & rhs ) const;
bool operator==( const Person & rhs ) const;

private:
const int ssn;
string name;
};
#endif



I compile it with the command g++ -c Person.cpp -o Person.o and get message



In file included from Person.cpp:3:
Person.h:7: error: expected ‘,’ or ‘...’ before ‘&’ token
Person.h:7: error: ISO C++ forbids declaration of ‘string’ with no type
Person.h:8: error: ISO C++ forbids declaration of ‘string’ with no type
Person.h:8: error: expected ‘;’ before ‘&’ token
Person.h:10: error: ‘ostream’ has not been declared
Person.h:16: error: ‘string’ does not name a type
Person.h:10: error: ‘cout’ was not declared in this scope
Person.cpp:5: error: expected ‘,’ or ‘...’ before ‘&’ token
Person.cpp:5: error: ISO C++ forbids declaration of ‘string’ with no type
Person.cpp: In constructor ‘Person::Person(int, int)’:
Person.cpp:6: error: class ‘Person’ does not have any field named ‘name’
Person.cpp:6: error: ‘n’ was not declared in this scope
Person.cpp: At global scope:
Person.cpp:9: error: expected initializer before ‘&’ token
Person.cpp:15: error: variable or field ‘print’ declared void
Person.cpp:15: error: ‘ostream’ was not declared in this scope
Person.cpp:15: error: ‘out’ was not declared in this scope
Person.cpp:15: error: ‘cout’ was not declared in this scope



I'm new to C++ and just followed an example in my book and modified it, does anybody know what I'm doing wrong?

[jspolen]

Solved it myself

changed the line


void Person::print( ostream & out = cout ) const


in the Person.cpp file to


void Person::print( ostream & out ) const


and added
#include <string>
using namespace std; in the header file.

[Flynn555]

void Person::print( ostream & out = cout ) const



:lolflag: