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error LNK 2019 unresolved external symbol

Janisha (1)
How do I resolve this error LNK 2019? I think it means the compiler cannot find something........1>measurement.obj : error LNK2019: unresolved external symbol "public: void __thiscall measurement::output(class std::basic_ostream<char,struct std::char_traits<char> > &)" (?output@measurement@@QAEXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@@Z) referenced in function _main

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  #include <iostream>
using namespace::std;


class measurement
{
public:
	// Constructors
    measurement(void);
	measurement(int y , int f, int i);


    //  Mutator Functions
	void setYards(int);
	void setFeet(int);
	void setInches(int);

	//   Accessor Functions 
	int getYards(void);
	int getFeet(void);
    int getInches(void);

	//   Other Functions

	void advanceOneInch();

	     //  increase the inches amount by 1
	     //      NOTE:  you may have to advance the feet
	     //             you may have to advance the yards

	void output(ostream &);
	void zeroOut(void);       //  set yards, feet and inches to 0

private:

	int yards;
	int feet;
	int inches;

};

void main()
{
	measurement  stackOfLumber(3,2,5);

	for( int i = 1; i <= 200; i++)
	{
		
		stackOfLumber.advanceOneInch();
		stackOfLumber.output(cout);
	}

	
	stackOfLumber.zeroOut();
	stackOfLumber.output(cout);
	
		
	stackOfLumber.setYards(6);
	stackOfLumber.setFeet(2);
	stackOfLumber.setInches(3);
	
	cout << stackOfLumber.getYards()  << ' ' 
		 << stackOfLumber.getFeet()   << ' '
		 << stackOfLumber.getInches() << endl;



	return;
}
measurement::measurement (void)
{
	yards=3;
	feet=2;
	inches=5;
}
measurement::measurement (int y, int f, int i)
{
	yards=y;
	feet=f;
	inches=i;
}
void measurement::setYards (int y)
{
	yards=y;
}
void measurement::setFeet (int f)
{
	feet=f;
}
void measurement::setInches (int i)
{
	inches=i;
}
int measurement::getInches (void)
{
	return inches;
}
int measurement::getYards (void)
{
	return yards;
}
int measurement::getFeet (void)
{
	return feet;
}
void measurement::advanceOneInch()
{
	inches++;
	if (inches>11)
	{
		feet++;
		inches=0;
	}
	if (feet>2)
	{
		yards++;
		feet=0;
	}
}
void measurement::zeroOut(void)
	{
		inches=0;
		feet=0;
		yards=0;
	}
Last edited on
MiiNiPaa (8886)
Line 50. Tell me where is body of output function located?
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