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Rainfall Statistics assistance

SpanishViking13 (14)
Hey dudes! I'm looking for some help with my code. I have almost everything working except my averageRainfall function. I don't know what I have wrong and I need a fresh set of eyes to look at it and give me a hand. Any help would be much appreciated, thanks!

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#include <iostream>
#include <cstdlib>
#include <iomanip>
#include <string>

using namespace std;

//Global V&C
const int SIZE= 12;

void welcome();
void getData (double [], int qty);
double totalRainfall(double [], int qty);
double averageRainfall(double [], int qty); 
void wettestMonth(double [], int &wM, double &highest);
void driestMonth(double [], int &dM, double &lowest);

int main()
{
	//V&C
	double rainfall[SIZE];
	double tRF = 0, aRF = 0, lowest, highest;
	int  wM = 0 , dM = 0;
	string month[12] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};


	welcome();

	//Input
	getData(rainfall, SIZE);

	tRF = totalRainfall(rainfall, SIZE);

//	aRF = averageRainfall(rainfall, SIZE);

	wettestMonth(rainfall, wM, highest);

	driestMonth(rainfall, dM, lowest);

	//Output
	cout<<fixed<<setprecision(2);
	cout<<endl<<"The Rain Report for Neversnows County"<<endl;
	cout<<"-------------------------------------"<<endl;
	cout<<"Total rainfall for the year: "<<tRF<<" inches"<<endl;
	cout<<"Average rainfall for the year: "<<aRF<<" inches"<<endl;
	cout<<"The least amount of rain fell in "<<month[dM]<<" with "<<lowest<<" inches"<<endl;
	cout<<"The most amount of rain fell in "<<month[wM]<<" with "<<highest<<" inches"<<endl;
	cout<<"-------------------------------------"<<endl;

	return 0;

}



void welcome ()
{
	cout << "Welcome to the Rainfall Statistics Program "<<endl;
	return;
}

void getData (double rainfall [], int SIZE)
{
	int count;

	cout<< "Please enter the amount of inches of rainfall for the year.\n(Please hit the Return key after each input)"<<endl;
	for (count = 0; count < SIZE; count++)
	{
		cin>> rainfall[count];

		//Validation
		if (rainfall[count] < 0)
		{
			cout << "Please only use positive numbers." << endl;
			cin>> rainfall[count];
		}

	}

}


double totalRainfall(double rainfall [], int SIZE)
{
	int count;
	double tRF = 0;

	for (count = 0; count < SIZE; count++)
	{
		tRF += rainfall[count];
	}
	return tRF;
}


double averageRainfall(double tRF, int SIZE)
{
	double aRF = 0;

	aRF = tRF/SIZE;

	return aRF;
}


void driestMonth(double rainfall [], int &dM, double &lowest)
{
	lowest = rainfall[0];

	for (int count = 1; count < SIZE; count++)
	{ 
		if (rainfall[count] < lowest)
		{
			lowest = rainfall[count];
			dM++;
		}
	}
	
}


void wettestMonth(double rainfall [], int &wM, double &highest)
{
	highest = rainfall[0];

	for (int count = 1; count < SIZE; count++)
	{ 
		if (rainfall[count] > highest)
		{
			highest = rainfall[count];
			wM ++;
		}
	}

}
Imadatobanisa (647)
Actually, I'm not a dude <:)
But, please, what is your current problem? (E.g : averageRainfall)?

SpanishViking13 (14)
Lol sorry! I'm used to calling everyone dude. Apologies. When I run the program without the averageRainfall function commented, it fails and gives me 2 errors:

Error 1 error LNK2019: unresolved external symbol "double __cdecl averageRainfall(double * const,int)" (?averageRainfall@@YANQANH@Z) referenced in function _main C:\Users\Mac\Desktop\VSProjects\Ch8PC7Final\Ch8PC7Final\8_7_FSource.obj Ch8PC7Final


Error 2 error LNK1120: 1 unresolved externals C:\Users\Mac\Desktop\VSProjects\Ch8PC7Final\Debug\Ch8PC7Final.exe Ch8PC7Final


So I'm not sure what is wrong... I'm new at this btw
SpanishViking13 (14)
I'm sorry, I found my error. Thanks anyway!
Here's my code if anyone would like to review it.

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#include <iostream>
#include <cstdlib>
#include <iomanip>
#include <string>

using namespace std;

//Global V&C
const int SIZE= 12;

void welcome();
void getData (double [], int qty);
double totalRainfall(double [], int qty);
double averageRainfall(double &tRF, int SIZE);
void wettestMonth(double [], int &wM, double &highest);
void driestMonth(double [], int &dM, double &lowest);

int main()
{
	//V&C
	double rainfall[SIZE];
	double tRF = 0, aRF = 0, lowest, highest;
	int  wM = 0 , dM = 0;
	string month[12] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};


	welcome();

	//Input
	getData(rainfall, SIZE);

	tRF = totalRainfall(rainfall, SIZE);

	aRF = averageRainfall(tRF, SIZE);

	wettestMonth(rainfall, wM, highest);

	driestMonth(rainfall, dM, lowest);

	//Output
	cout<<fixed<<setprecision(2);
	cout<<endl<<"The Rain Report for Neversnows County"<<endl;
	cout<<"-------------------------------------"<<endl;
	cout<<"Total rainfall for the year: "<<tRF<<" inches"<<endl;
	cout<<"Average rainfall for the year: "<<aRF<<" inches"<<endl;
	cout<<"The least amount of rain fell in "<<month[dM]<<" with "<<lowest<<" inches"<<endl;
	cout<<"The most amount of rain fell in "<<month[wM]<<" with "<<highest<<" inches"<<endl;
	cout<<"-------------------------------------"<<endl;

	return 0;

}



void welcome ()
{
	cout << "Welcome to the Rainfall Statistics Program "<<endl;
	return;
}

void getData (double rainfall [], int SIZE)
{
	int count;

	cout<< "Please enter the amount of inches of rainfall for the year.\n(Please hit the Return key after each input)"<<endl;
	for (count = 0; count < SIZE; count++)
	{
		cin>> rainfall[count];

		//Validation
		if (rainfall[count] < 0)
		{
			cout << "Please only use positive numbers." << endl;
			cin>> rainfall[count];
		}

	}

}


double totalRainfall(double rainfall [], int SIZE)
{
	int count;
	double tRF = 0;

	for (count = 0; count < SIZE; count++)
	{
		tRF += rainfall[count];
	}
	return tRF;
}


double averageRainfall(double &tRF, int SIZE)
{
	double aRF = 0;

	aRF = tRF/SIZE;

	return aRF;
}


void driestMonth(double rainfall [], int &dM, double &lowest)
{
	lowest = rainfall[0];

	for (int count = 1; count < SIZE; count++)
	{ 
		if (rainfall[count] < lowest)
		{
			lowest = rainfall[count];
			dM++;
		}
	}
	
}


void wettestMonth(double rainfall [], int &wM, double &highest)
{
	highest = rainfall[0];

	for (int count = 1; count < SIZE; count++)
	{ 
		if (rainfall[count] > highest)
		{
			highest = rainfall[count];
			wM ++;
		}
	}

}
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