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error LNK2019: unresolved external symbol

Redshift (7)
Hey everyone,
I am just learning to program through multiple files and I am getting this error that I can not seem to figure out:

CPPPP CH9Q4.obj : error LNK2019: unresolved external symbol "void __cdecl SALES::setSales(struct SALES::salesStruct &)" (?setSales@SALES@@YAXAAUsalesStruct@1@@Z) referenced in function _main
1>C:\Users\CP\documents\visual studio 2010\Projects\CPPPP CH9Q4\Debug\CPPPP CH9Q4.exe : fatal error LNK1120: 1 unresolved externals

The program is simple, just an exercise of user-defined namespaces, header and source files.

Here is my code:

Sales.h
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#ifndef SALES_H
#define SALES_H

namespace SALES
{
	const int Quarters = 4;
	struct salesStruct
	{
		double salesArray[Quarters];
		double average;
		double max;
		double min;
	};

	void setSales(salesStruct & s,  double ar[], int n);

	void setSales(salesStruct & s);

	void showSales(const salesStruct & s);
}

#endif


Sales.cpp
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#include "stdafx.h"
#include "Sales.h"
#include <iostream>

	using namespace SALES;
	
	void setSales(salesStruct & s, double ar[], int n)
	{
	}

	void setSales(salesStruct & s)
	{
		using std::cout;
		using std::cin;
		using std::endl;

		for(int iii = 0; iii < Quarters; iii++)
		{
			cout << "Enter value number " << iii + 1 << "." << endl;
			double n = 0;
			cin >> n;
			s.salesArray[iii] = n;
		}

		double total = 0;

		for(int iii = 0; iii < Quarters; iii++)
		{
			
			total += s.salesArray[iii];
		}
		s.average = total / Quarters;

		s.max = s.salesArray[0];
		for(int iii = 1; iii < Quarters; iii++)
		{
			if(s.max < s.salesArray[iii])
				s.max = s.salesArray[iii];
		}

		s.min = s.salesArray[0];
		for(int iii = 1; iii < Quarters; iii++)
		{
			if(s.min > s.salesArray[iii])
				s.min = s.salesArray[iii];
		}
	}

	void showSales(const salesStruct & s)
	{
		using std::cout;
		using std::endl;

		for(int iii = 0; iii < Quarters; iii++)
			cout << s.salesArray[iii] << " ";
		cout << endl;
	}


main.cpp:
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#include "stdafx.h"
#include <iostream>
#include "Sales.h"

int main()
{
	using namespace SALES;
	salesStruct mystruct;

	setSales(mystruct);
	showSales(mystruct);

	return 0;
}
Last edited on
bbgst (203)
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void SALES::setSales(salesStruct & s)
{
}

// etc...


Also, use using on the global scope (outside function definitions) unless you plan to use them just on that particular function. And, instead of using namespace SALES;, prefer:

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using SALES::salesStruct;
// etc...
Redshift (7)
Thanks for the reply! No more unresolved externals!
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