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Hello i am trying to construct a class for the first time...its called Field and is very similar to a vector in that it tries to store an array of double.. i am not able to compile the code..i get the error that field.h does not exist..pls see if u r able to compile it..

```
//*********************Field.h
#ifndef CLASS_Field
#define CLASS_Field
#include <iostream>
#include <cmath>
using std::cout;
using std::endl;
using namespace std;
class Field {
public:
Field (unsigned int);
Field (const Field&);
~Field();
Field& operator= (const Field&);
double & operator[]; (constant unsigned int);
bool operator== (const Field&);
bool operator!= (const Field&);
Field operator+ (const Field&);
Field operator- (const Field&);
Field operator* (const double&);
Field operator/ (const double&);
void print ();
};
#endif
//**************Field.cpp
#include "Field.h"
//constructor
Field::Field(unsigned int N) {
if (N == 0) {
cout << "Value must be a positive integer" << endl;
exit(-1);
}
size = N;
data = new double [size];
}
//copy constructor
Field::Field(const Field& F) {
size = F.size;
for (unsigned int i = 0; i< size; ++i) {
data[i] = F.data[i];
}
}
//destructor
Field::~Field () {
delete[] data;
}
//Assignment operator
Field& Field::operator= (const Field& F) {
if (F.size != size) {
delete[] data;
size = F.size;
data= new double [size];
}
for (unsigned int i = 0; i < size; ++i){
data[i] = F.data[i];
}
return *this,
}
// Array index operator
double& Field::operator [] (const unsigned int index) {
if (index >= size) {
cout << "index is out of range" << endl;
exit(-1);
}
return data[index];
}
// Comparison operator
bool Field::operator== (const Field& F) {
if (F.size != size) {
return false;
}
for (unsigned int i = 0; i < size; ++i) {
if (F.data[i] != data[i]) {
return false;
}
}
return true;
}
bool Field::operator!= (const Field& F) {
return !operator==(F);
}
//Arithmetic operators
//Addition
Field Field::operator+ (const Field& F) {
if (F.size != size) {
cout << "Fields are of different sizes!" << endl;
exit(-1);
}
Field T = *this;
for (unsigned int i = 0; i<size; ++i) {
T[i] += F.data[i];
}
return T;
}
//Subtraction
Field Field::operator- (const Field& F) {
if (F.size != size) {
cout << "Fields are of different sizes!" << endl;
exit(-1);
}
Field T = *this;
for (unsigned int i = 0; i<size; ++i) {
T[i] -= F.data[i];
}
return T;
}
//Multiplication
Field Field::operator* (const double& d) {
if (F.size != size) {
cout << "Fields are of different sizes!" << endl;
exit(-1);
}
Field T = *this;
for (unsigned int i = 0; i<size; ++i) {
T[i] *= d;
}
return T;
}
//Divide
Field Field::operator/ (const double& d) {
if (F.size != size) {
cout << "Fields are of different sizes!" << endl;
exit(-1);
}
Field T = *this;
for (unsigned int i = 0; i<size; ++i) {
T[i] /= d;
}
return T;
}
//To print out Field as a column vector
void Field::print() {
for (unsigned int i; i<size; ++i){
cout << data[i] << endl;
}
}
//********************main.cpp
#include "Field.h"
int main() {
unsigned int N = 5;
Field a(N);
for (unsigned int i; i<N; ++i) {
a[i] = i + 1;
}
cout << "Field a:" << endl;
a.print();
Field b = a;
cout << "Field b:" << endl;
b.print();
if (a==b) {
cout << "fields a and b are the same" << endl;
}
Field c(N);
c = a + (b * 0.5);
cout << "Field a + (b*0.5)" << endl;
c.print();
system("pause")
return 0;
}
```

*Edited 6 Years Ago by WaltP*: Added CODE tags -- with all the help about them, how could you miss using them????