Error c3861 min identifier not found

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@SanderBouwhuis

GSL itself should be able to compile out of the box to be used in your applications without any sort of an additional overhead. Is it only when you’re trying to use it in conjunction with windows.h that you’re having issues or are you running into issues in general?

The reason for needing to define NOMINMAX is to prevent macro expansion of all instances of the words min and max. You can think of the preprocessor as a really naive token replacement engine that just says «oh hey, it’s that max keyword thing! I better swap it out.» without taking any context into consideration. So you’ll even see compiler errors if you try invoking std::max from the algorithm header. A search on Github finds about 450k instances of NOMINMAX either surrounding Windows.h includes or as a compile definition, so it’s by no means an isolated issue.

I’m not familiar with GSL-lite, though I had a quick look at it and found that they surround the numeric_limits max call with the parentheses just like how @andreduvoisin suggests to fix it in pr #817. I’m not sure how often the maintainer(s) of gsl-lite updates with changes from this repo or how far it’s diverged.

I am not sure why this is occuring. I declared these functions in the header file and it is defined them in the .cpp file but in the main function it does not recognize them. Did I forget something basic or do something illegal?

The errors:
: error C3861: ‘createAndInitializeTextFile’: identifier not found
: error C3861: ‘enterRecords’: identifier not found
: error C3861: ‘test’: identifier not found
: error C3861: ‘test’: identifier not found
: error C3861: ‘processChoice’: identifier not found

My code for the header file:

class Tools
{
public:
	Tools(int = -1, string = "", int = 0, double = 0.0);	
	void setPartNumber(int);
	int getPartNumber() const;

	void setToolName(string);
	string getToolName() const;
	void setInStock(int);
	int getInStock() const;
	void setUnitPrice(double);
	double getUnitPrice() const;

	void createAndInitializeTextFile();
	void enterRecords();
	bool test();

	void processChoice();
	int enterChoice();

	void printTextFile(fstream&);
	void updateRecord(fstream&);
	void newRecord( fstream& );
	void deleteRecord( fstream& );
	void outputLine( ostream&, const Tools & );
	int getPart( const char * const );

private:
	enum Choices { PRINT = 1, UPDATE, NEW, DELETE, END };
	int partNumber;			
	char toolName[20];		
	int inStock;		
	double unitPrice;		
};

Some parts of my member function definitions:

void Tools::enterRecords()
{
	 fstream outTools( "hardware.dat", ios::in | ios::out | ios::binary );

    // exit program if fstream cannot open file
    if ( !outTools )
    {
       cerr << "File could not be opened." << endl;
       exit( 1 );
    } // end if

    cout << "Enter tool identification number (1 to 100, 0 to end input)n? ";

    // require user to specify account number
    Tools tool;
	//cin >> partNumber;

	partNumber = 3;
	cout << " 3";


    // user enters information, which is copied into file
    while ( partNumber > 0 && partNumber <= 100 )
    {
	   // user enters tool name, quantity and unit price
       cout << "Enter the tool name, quantity in stock, and the unit price for the tooln? ";
       //cin >> setw( 20 ) >> toolName;
       //cin >> inStock;
       //cin >> unitPrice;

	   toolName = "Electric Sander";
	   inStock = 7;
	   unitPrice = 57.98;

       // set the record for the part number, tool name, quantity in stock, and unit price
       tool.setPartNumber( partNumber );
       tool.setToolName( toolName );
       tool.setInStock( inStock );
       tool.setUnitPrice( unitPrice );

       // seek position in file of user-specified record   
       outTools.seekp( ( tool.getPartNumber() - 1 ) * sizeof ( Tools ) );                         

       // write user-specified information in file                   
       outTools.write( reinterpret_cast < const char * >( &tool ),sizeof ( Tools) );     
                             

       // enable user to enter another account
       //cout << "Enter account numbern? ";
       //cin >> partNumber;

    } // end while
}

bool Tools::test()
{
   ifstream inTools( "hardware.dat", ios::in | ios::binary );

    // exit program if ifstream cannot open file
    if ( !inTools )
    {
       cerr << "File could not be opened." << endl;
       exit( 1 );
    } // end if

	Tools tool;

	bool answer = false;
	
	if ( tool.getPartNumber() != 0 )
		answer = true;
	else
		answer = false;

	return answer;
}

My code in .cpp main function, where the error is occurring:

#include "Tools.h"

int main()
{
	createAndInitializeTextFile();
	enterRecords();
	test();

	if(test())
	{
		"Hardware program successful.";
		processChoice();
	}
	else
	{
		"Hardware program failed.";
	}

	cout << endl;
	return 0;
}

int main(int argc,  char* argv[])

system("pause");

error C3861: 'system': identifier not found
IntelliSense: identifier "system" is undefined

Решение

#include <stdlib.h>

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