(IntelliSense: no operator "<<" matches these operands ) and LNK1120/2001 unresolved

[tato1993]

I am working on a assignment for school and I am having some issues i havnetbeen able to figure out

my first issue is that i keep getting these external errors and then my cout stopped working, i understand im supposed to overload them or something but I dont really understand how

[2kaud]

Firstly, please don't post screen shots unless asked. We can't easily copy and paste the code into our own systems from them. Just do a normal copy and paste of code and then use code tags around the code (Go advanced, select the code and click '#').

st1 is an instance of the class Student. The class function getID() doesn't actually get the id but displays the value to the cout stream and has a return type of void. This is about what the compiler is complaining. Either call st1.getID() directly to display the value - or better have getID() return the value which is what would be expected from the name of the function. ie

int Student::getID()
{
     return ID;
}

The same comment also applies to the getName() class function.

[tato1993]

Thank you, for the quick responce and i managed to fix the cout issue but any ideas on fixing the external errors?

[GCDEF]

Thank you, for the quick responce and i managed to fix the cout issue but any ideas on fixing the external errors?

What type of project did you create?

[tato1993]

Also here is the code
this is the Student.h

#include<string.h>
#include<string>
#include<iostream>
using namespace std;


class Student
{private:
string fname;
string lname;
int ID;


public:
	Student();
	Student(string first,string last, int ID_num);
	static int numberOfStudents;
	void getName();
	int getID();

};

Here is my Student.cpp

#include <iostream>
#include "Student.h"
#include <string> 
using namespace std; 

 Student::Student()
{numberOfStudents+=1;
}

Student::Student(string first, string last, int ID_num)
{fname=first;
lname=last;
ID=ID_num;
numberOfStudents+=1;}

int Student::numberOfStudents=0;

void Student::getName()
{cout<<fname<<lname;}

int Student::getID()
{return ID;}
 
void main() 
{ 
 Student st1("Hakan", "Haberdar", 1234), st2("Charu", "Hans", 2345), st3("Tarikul", "Islam", 5442), st4; 
 cout << "We created " << Student::numberOfStudents << " student objects." << endl; 
 st1.getID();
	 cout<< " ";
	 st1.getName() ;
	 cout<< endl; 
 st2.getID() ;
	cout<< " " ;
	st2.getName();
	cout<<endl;
 st3.getID();
	 cout<< " " ;
	 st3.getName();
	 cout<< endl; 
 st4.getID();
	 cout<< " ";
	 st4.getName(); 
	 cout<< endl; 
system("pause"); 
}

[tato1993]

Win 32 console Application

[2kaud]

It looks like the linker can't find your main() function. You have main returning a type void but it should return a type int.

Your code compiles and links OK for me using MSVS - so it's probably how a linker property has been set.

Also <string.h> should be <cstring> in c++.

[tato1993]

Idk if i should start a new thread but i ran into a new problem i tried creating a new class derived from this student class in its own .h, but whenever I use

#include "Student.h"

it tells me it cant open the source code.
Also im assuming my problem with the LNK is jus something on my version i got Microsoft Visual C++ 2010