Hello Please I am having this error in my c++ project, I need help please. Below is the erro which comes out each time i try to run the main.cpp.

Error LNK1120 2 unresolved externals main

C:\Users\bleac\Documents\C##\Lab5\main\Debug\main.exe 1

Error LNK2019 unresolved external symbol "double __cdecl nlc::largest(double * const,int)" (?largest@nlc@@YANQANH@Z) referenced in function _main main C:\Users\bleac\Documents\C##\Lab5\main\main.obj 1

Error LNK2019 unresolved external symbol "double __cdecl nlc::smallest(double * const,int)" (?smallest@nlc@@YANQANH@Z) referenced in function _main main C:\Users\bleac\Documents\C##\Lab5\main\main.obj 1

These are my codes:

THE MAIN.CPP CODE

#include "pch.h"

#include

#include "Largest.h"

#include "Smallest.h"

//#include "Average.h"

using namespace std;

// addition of the new namespace

using namespace nlc;

int main()

{

double numbers[] = { 4.5, 3.4, 5.6, 9.1, 6.7, 7.8 };

int count = sizeof(numbers) / sizeof(double);

cout << largest(numbers, count);

cout << endl;

cout << smallest(numbers, count);

cout << endl;

//cout << Average(numbers, count);

}

HERE IS HE LARGEST.CPP COD

#include "Largest.h"

using namespace std;

namespace nlc;

{

double largest(double numbers[], int size)

{

double max = numbers[0];

for (int i = 0; i < size; i++)

{

// check if current number is greater than the max

if (numbers[i] > max) max = numbers[i];

}

return max;

}

}

HERE IS THE LARGEST.H CODE

#pragma once

#ifndef LARGEST_H

#define LARGEST_H

using namespace std;

namespace nlc

{

double largest(double[], int);

}

#endif

HERE IS THE SMALLEST.CPP CODE

#include

#include "Smallest.h"

using namespace std;

namespace nlc;

{

double smallest(double numbers[], int size)

{

double min = numbers[0];

for (int i = 0; i < size; i++)

{

// check if current number is smaller than the min

if (numbers[i] < min) min = numbers[i];

}

return min;

}

}

HERE IS THE SMALLEST.H CODE

#pragma once

#include

using namespace std;

#ifndef SMALLEST_H

#define SMALLEST_H

using namespace std;

namespace nlc

{

double smallest(double[], int);

}

#endif