Error during compile. LNK1120

[Hippiewho]

So I'm stuck unable to compile this program because it throws two errors. I'm not to completely sure what they are and don't seem to be the actual code but I'm a student and of course I could be wrong. Any help would be appreciated. I am using Visual Studio 2013 Ultimate BTW. Here is the code.

this is gatheringInfo.cpp

#include "personalInfo.h"
#include <iostream>

using namespace std;

int main()
{
	int age = 1, day = 1, month = 1, year = 1989;
	string name = "Frank Navarrete";
	personalInformationClass PIC(age,day,month,year, name);

	cout << PIC.getAge();
	cout << age;
	return 0;
}

and this is persoanalInfo.h

#include <string>

typedef struct
{
	int day;
	int month;
	int year;
} DOBTEMP;


class personalInformationClass {
private:
	int age;
	DOBTEMP DOB;
	std::string name = "";
	std::string comments = "No Comments";
public:
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		name = NAME;
	}
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME, std::string COMMENTS)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		comments = COMMENTS;
	}

	void populateDOB(int D, int M, int Y)
	{
		DOB.day = D;
		DOB.month = M;
		DOB.year = Y;
	}

	int getAge()
	{
		return age;
	}
};

and the errors

Error	1	error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup	C:\Users\Frank\documents\visual studio 2013\Projects\Info Database\Info Database\MSVCRTD.lib(crtexew.obj)	Info Database
Error	2	error LNK1120: 1 unresolved externals	C:\Users\Frank\documents\visual studio 2013\Projects\Info Database\Debug\Info Database.exe	Info Database

ANY advice would be helpful! cheers!

[keskiverto]

Strip the personalInformationClass:: from lines 22 and 30. Does that make a difference?


Compiler converts source code into object files. The errors are from linker. The linker combines object files into a binary.

[Hippiewho]

You're right i guess it wouldn't.
How can i go about fixing the linker errors?

[keskiverto]

GCC compiler doesn't like the personalInformationClass:: either

$ g++ -std=c++11 -Wall -Wextra -pedantic personalInfo.cpp -o personalInfo
In file included from personalInfo.cpp:1:0:
personalInfo.h:18:2: error: extra qualification ‘personalInformationClass::’ on member ‘personalInformationClass’ [-fpermissive]
  personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME)
  ^
personalInfo.h:24:2: error: extra qualification ‘personalInformationClass::’ on member ‘personalInformationClass’ [-fpermissive]
  personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME, std::string COMMENTS)
  ^
personalInfo.h:24:2: warning: unused parameter ‘NAME’ [-Wunused-parameter]

Without them, it compiles.

[coder777]

Hippiewho wrote:

and the errors

That's a typical error when you choose the wrong project type. Make sure that it the project type is console

[flony1]

error LNK2019: unresolved external symbol
error LNK1120: 1 unresolved externals
the error is on line 1 gatheringInfo.cpp
#include "personalInfo.h"
should be
#include "persoanalInfo.h"
after you got errors on lines 15 and 16 "persoanalInfo.h"

std::string name = "";
	std::string comments = "No Comments"

propose to do

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

typedef struct
{
	int day;
	int month;
	int year;
} DOBTEMP;


class personalInformationClass {
private:
	int age;
	DOBTEMP DOB;
	string name ;
	string comments;
public:
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, string NAME)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		getline (cin, NAME);
	}
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, string NAME, string COMMENTS)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		getline(cin, COMMENTS);
	}

	void populateDOB(int D, int M, int Y)
	{
		DOB.day = D;
		DOB.month = M;
		DOB.year = Y;
	}

	int getAge()
	{
		return age;
	}
};

[coder777]

GCC compiler doesn't like the personalInformationClass:: either

Like keskiverto suggested:

#include <string>

typedef struct
{
	int day;
	int month;
	int year;
} DOBTEMP;


class personalInformationClass {
private:
	int age;
	DOBTEMP DOB;
	std::string name = "";
	std::string comments = "No Comments";
public:
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		name = NAME;
	}
	personalInformationClass::personalInformationClass(int AGE, int MONTH, int DAY, int YEAR, std::string NAME, std::string COMMENTS)
	{
		age = AGE;
		populateDOB(DAY, MONTH, YEAR);
		comments = COMMENTS;
	}

	void populateDOB(int D, int M, int Y)
	{
		DOB.day = D;
		DOB.month = M;
		DOB.year = Y;
	}

	int getAge()
	{
		return age;
	}
};

[Hippiewho]

Sorry for the late reply. Had finals. So apparently i did choose the wrong project type. Fixed IT! Thanks for all the input guys ill take into account all that was said