error C2511 - instantiate - func. is declared in header file, but not used in cpp file.

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C++

Visual-Studio

Hi,
I declare some functions in my header file, all of them work but one, which i can't figure out why.

you can see the code here:

the header file:

class myfile
{
public:
	myfile(void);
	~myfile(void);
	int desplay();
	void print(int a[],int l);
/* here */	void print(int a[],int s,int l);
	void print(int a);
	void print(string s);
};

the cpp file:

#include "stdafx.h"
#include "myfile.h"
#include <string.h>
#include <string>
#include <conio.h>
#include <iostream>
#include <fstream>
using namespace std;

#pragma region constructor_deconstructor
myfile::myfile(void)
{
}


myfile::~myfile(void)
{
}
#pragma endregion constructor_deconstructor

void myfile::print(int a[], int l){
	/* writes array a with l length to the end of a file (trace.txt) in the format:
	array:
	1 - 2 - 3 */
	ofstream fp;fp.open("trace.txt",ios::in | ios::app);
	if(fp.is_open()){
		fp.seekp(ios::ate,ios::end);
		fp<<endl;
	int i=0;
	print("\na[0..");print(l-1);print("] :\n");	
	for (i=0; i<l; i++){
		std::cout<<a[i];
		if(i<l-1)cout<<" - ";
		fp<<a[i];
		if(i<l-1)fp<<" - ";}
	}
}
/* here */
void myfile::print(int a[],int s, int l){
		/* writes array a with l length to the end of a file (trace.txt) in the format:
	array:
	1 - 2 - 3 */
	ofstream fp;fp.open("trace.txt",ios::in | ios::app);
	if(fp.is_open()){
		fp.seekp(ios::ate,ios::end);
		fp<<endl;
	int i=0;
	print("\na[0..");print(l-1);print("] :\n");	
	for (i=s; i<l; i++){
		std::cout<<a[i];
		if(i<l-1)cout<<" - ";
		fp<<a[i];
		if(i<l-1)fp<<" - ";}
	}
}

void myfile::print(int a){
	/* Prints a single number at the end of a file (trace.txt) */
	ofstream fp;fp.open("trace.txt",ios::in | ios::app);
	if(fp.is_open()){
		fp.seekp(ios::ate,ios::end);		
		std::cout<<a;
		fp<<a;}
}

void myfile::print(string s){
	/* Prints a string at the end of a file (trace.txt) */
	ofstream fp;fp.open("trace.txt",ios::in | ios::app);
	if(fp.is_open()){
		fp.seekp(ios::ate,ios::end);		
		std::cout<<s;
		fp<<s;}
}

can you tell me why it gives me the error C2511 about this function which says:
error C2511: 'void myfile::print(int [],int,int)' : overloaded member function not found in 'myfile'

with another error:
intelliSense: no instance of overloaded function "myfile::print" matches the specified type
And i have a redline under the 'print' where i've comented /* here */

why not the rest of them?
and how should i fix it?

Thanks,