Help with error?

[ccwtree11]

I'm getting an error on line 15. It says "'doCalculation': identifier not found". Any idea what I'm doing wrong?

#ifndef CHECK_H_
#define CHECK_H_

#include <iostream>
#include <fstream>

using namespace std;

void checkFile ( istream & infile )
{
	string tempString;

	if ( infile >> tempString )
	{
		doCalculation ( infile );
	}
	else
	{
		cout << "primes: 0  The file you entered is empty";
	}
}

void doCalculation ( istream & infile )
{
	while ( true )
	{
		int a, b, i, j, k, primecount;

		if ( infile.fail() )
		{
			break;
		}

		infile >> a >> b;
		for ( i=a; i<=b; i++ )
		{
			for ( j=1; j<=i; j++ )
			{
				k = i % j;

				if ( k = 0 )
				{
					primecount++;
				}
			}
		}

		cout << a << "    " << b << "  primes: " << primecount << endl;
	}
}

#endif 

[LB]

Rearrange the order of the functions, or declare a prototype for doCalculation before you define checkFile. This isn't Java, you know - order matters ;)

[ccwtree11]

Many thanks :)