Undeclared Variable Error?? Thought it's pre-built in <cstdlib>??

[regnar86]

Having a hard time figuring out where my error is. It's telling me there are numerous semantic issues which are all pointing to my global variable _MAX_FNAME. I don't understand this because I've included cstdlib from which the variable is defined in.

Environment: XCODE4.6.1

Here are the errors it is displaying:

Week_7 Group
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/myfile.h
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/myfile.h:9:24: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/myfile.h:11:22: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/myfile.h:13:17: Use of undeclared identifier 'newFile'; did you mean 'newfile'?
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/myfile.h:13:25: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:24:22: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:25:22: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:26:22: Use of undeclared identifier '_MAX_FNAME'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:47:13: Implicit conversion loses integer precision: 'streamoff' (aka 'long long') to 'int'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:56:13: Implicit conversion loses integer precision: 'streamoff' (aka 'long long') to 'int'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:63:13: Implicit conversion loses integer precision: 'streamoff' (aka 'long long') to 'int'
/Users/shaneyost/Desktop/NEST/XCODE FILES/Week_7/Week_7/main.cpp:69:13: Implicit conversion loses integer precision: 'streamoff' (aka 'long long') to 'int'

Here is my code in main.cpp:
Errors exist on lines 24,25,26 saying undeclared iden. variable _MAX_FNAME

// main.cpp
// Week_7


#include <cstdlib>
#include <iostream>
#include <string>
#include <fstream>
using namespace std;

#include "person.h"
#include "myfile.h"

int addStudent();

int main(int argc, char *argv[])
{
    char *file1, *file2, *file3;
    string outStr, buf;
    int length = 0, where = 0, addStud = 0;
    ifstream input;
    ofstream output, outfile;
    file1 = new char[_MAX_FNAME];
    file2 = new char[_MAX_FNAME];
    file3 = new char[_MAX_FNAME];
    filePrompt(file1, file2, file3);
    
    input.open(file1);
    if(!input.is_open()){
        cerr << "Error opening input file " << file1 << " . . .\n";
        system("pause");
        exit(1);
    }
    output.open(file2);
    if(!output.is_open()){
        cerr << "Error opening input file " << file2 << " . . .\n";
        system("pause");
        exit(1);
    }
    outfile.open(file3);
    if(!outfile.is_open()){
        cerr << "Error opening input file " << file3 << " . . .\n";
        system("pause");
        exit(1);
    }
    where = input.tellg();
    cout << "\nThe file pointer is "<< where << " here\n";
    while(getline(input, buf)){
        output << buf << "\n";
    }
    output.close();
    
    input.clear();
    input.seekg(0,ios::beg);
    where = input.tellg();
    cout << "\nThe file pointer is "<< where << " here\n";
    
    while(getline(input,buf)){
        outStr += buf + "\n"; length++;
    }
    cout << outStr;
    where = input.tellg();
    cout << "\nThe file pointer is "<< where << " here\n";
    cout << "\nThe file length is " << length << endl;
    
    input.clear();
    input.seekg(0,ios::beg);
    where = input.tellg();
    cout << "\nThe file pointer is "<< where << " here\n";
    system("pause");
    Person *SRD = new Person[length];
    
    for(int i = 0; i < length; i++){
        getline(input,SRD[i].lastname,',');
        getline(input,SRD[i].firstname,',');
        input >> SRD[i].gender; input.ignore(1);
        getline(input,SRD[i].STUD.major,',');
        input >> SRD[i].STUD.gpa; input.ignore(1);
    }
    for(int i = 0; i < length; i++){
        cout << SRD[i].firstname << " " << SRD[i].lastname << endl;
        if(SRD[i].gender)
            cout << "Gender: Female\n";
        else
            cout << "Gender: Male\n";
        cout << "Major: " << SRD[i].STUD.major << endl
        << "GPA: " << SRD[i].STUD.gpa << endl << endl;
    }
    input.close();
    system("pause");
    char value = ' ';
    addStud = addStudent();
    Person *temp = new Person[addStud];
    cin.ignore(1);
    for(int i = 0; i < addStud; i++){
        system("cls");
        cout << "Enter Student's Last Name: ";
        getline(cin,temp[i].lastname,'\n');
        cout << "Enter Student's First Name: ";
        getline(cin,temp[i].firstname,'\n');
        cout << "Enter Student's Gender M or F: ";
        cin >> value; cin.ignore(1);
        value = toupper(value);
        temp[i].gender = (value == 'F')? true: false;
        cout << "Enter Student's Major: ";
        getline(cin,temp[i].STUD.major,'\n');
        cout << "Enter Student's GPA: ";
        cin >> temp[i].STUD.gpa; cin.ignore(1);
    }
    Person *temp2 = new Person[length+addStud];
    for(int j = 0; j < length; j++){
        temp2[j].lastname = SRD[j].lastname;
        temp2[j].firstname = SRD[j].firstname;
        temp2[j].gender = SRD[j].gender;
        temp2[j].STUD.major = SRD[j].STUD.major;
        temp2[j].STUD.gpa = SRD[j].STUD.gpa;
    }
    for(int j = 0, k = length; k < length+addStud; k++, j++){
        temp2[k].lastname = temp[j].lastname;
        temp2[k].firstname = temp[j].firstname;
        temp2[k].gender = temp[j].gender;
        temp2[k].STUD.major = temp[j].STUD.major;
        temp2[k].STUD.gpa = temp[j].STUD.gpa;
    }
    system("cls");
    for(int i = 0; i < length+addStud; i++){
        outfile << temp2[i].lastname << ','
        << temp2[i].firstname << ','
        << temp2[i].gender << ','
        << temp2[i].STUD.major << ','
        << temp2[i].STUD.gpa << endl;
        if((i+1)< 10)
            cout << " " << i+1 << " " << temp2[i].lastname << ','
            << temp2[i].firstname << ','
            << temp2[i].gender << ','
            << temp2[i].STUD.major << ','
            << temp2[i].STUD.gpa << endl;
        else
            cout << i+1 << " " << temp2[i].lastname << ','
            << temp2[i].firstname << ','
            << temp2[i].gender << ','
            << temp2[i].STUD.major << ','
            << temp2[i].STUD.gpa << endl;
    }
    outfile.close();
    system("PAUSE");
    return EXIT_SUCCESS;
} // end of main
// function definitions
int addStudent(){
    system("cls");
    int value = 0;
    cout << "How many students would you like to add? ";
    cin >> value;
    return value;
}

Here is my code in my two .h files:


Errors exist on 9, 11, 13 saying use of undeclared iden. _MAX_FNAME

//  myfile.h
//  Week_7
#ifndef MYFILE_H
#define MYFILE_H
#include <iostream>
using namespace std;
void filePrompt(char *master, char *copy, char *newfile){
    cout << "Enter the MasterFile filename: ";
    cin.getline(master,_MAX_FNAME,'\n');
    cout << "Enter the CopyTo filename: ";
    cin.getline(copy,_MAX_FNAME,'\n');
    cout << "Enter the NewMasterFile filename: ";
    cin.getline(newFile,_MAX_FNAME,'\n');
}
#endif

//  person.h
//  Week_7
#ifndef PERSON_H
#define PERSON_H
using namespace std;
struct Person{
    string lastname;
    string firstname;
    bool gender;
    struct Student{
        string major;
        float gpa;
    }STUD;
};
#endif 

I went ahead and defined this....
#define _MAX_FNAME 256

However now I cannot even open the file I'm wanting to which is a txt file. I made sure the file was in my project folder with all the other files main.cpp and both .h files. However it cannot open it. Any ideas on how I could approach troubleshooting this.