Re write this code without functions?

[ashley19]

Can someone help me?

#include <iostream>
using namespace std;

void fill_array ( int golfArray[], int size);
double compute_average ( int golfArray[], int size);

int main()
{
	int scores[5];

	fill_array (scores, 5);
	cout << "The average is: " << compute_average(scores, 5) << endl;

	return 0;
}

void fill_array ( int golfArray[], int size)
{
	for (int i = 0; i < size; i++)
	{
		cout << "Enter score for golfer number " << i+1 << ": ";
		cin >> golfArray[i];
	}
}

double compute_average ( int golfArray[], int size)
{
	double total=0;

	for (int i = 0; i < size; i++)
		total = total + golfArray[i];

	return total/size;
}

[Bazzy]

Replace the function calls with the code of the functions and replace the function parameters with the actual arguments.
Why do you need to do this anyway?

[ashley19]

I want to fully understand the differences between functions and arrays and it's a little hard doing so with a program that uses both in one.

I will try to do this and reply with what I did

[Bazzy]

You can read the tutorial:
http://www.cplusplus.com/doc/tutorial/functions/
http://www.cplusplus.com/doc/tutorial/arrays/

They are not related concepts

[ashley19]

I' still confused.

"Replace the function calls with the code of the functions and replace the function parameters with the actual arguments."

I'm not sure what does means. Can someone give me an example of one, and I will try and do the others?

[kevinchkin]

void printHello(string nameArg) { 

   cout<<"Hello "<<nameArg<<endl; 
}

int main() { 

  string name = "abc"; 
  printHello(name) ; 

return 0;
}

should be replaced with:

int main() { 

    string name="abc";
    cout<<"Hello "<<name<<endl; 

    return 0; 
}

[Mythios]

Fill array is done here. See if you can do the other function.

#include <iostream>
using namespace std;

double compute_average ( int golfArray[], int size);

int main()
{
	const int size = 5;
	int scores[size];

	// fill_array
	for (int i = 0; i < size; i++)
	{
		cout << "Enter score for golfer number " << i+1 << ": ";
		cin >> scores[i];
	}

	cout << "The average is: " << compute_average(scores, 5) << endl;

	return 0;
}

double compute_average ( int golfArray[], int size)
{
	double total=0;

	for (int i = 0; i < size; i++)
		total = total + golfArray[i];

	return total/size;
}

[ashley19]

Just a few questions before I try it.

at the top the double compute_average ( int golfArray[], int size); Is this the function prototype? If I want this program purely all arrays would I need that? If I am trying to write this program without functions, do I simply delete that line? I know the double is what its returning, the next is function name, then to arguments it passes through, however is it safe to delete this line of code?

And I'm not sure what this line of code does?
compute_average(scores, 5)


And for the compute_average when writing it without a function, there are no cins right? Just a cout >> average ?

[Mythios]

at the top the double compute_average ( int golfArray[], int size); Is this the function prototype? If I want this program purely all arrays would I need that? If I am trying to write this program without functions, do I simply delete that line?

You don't need this, you can delete it and the function itself.

And I'm not sure what this line of code does?

That line of code is calling the function compute_average. You want to remove that as well and replace it will something like.

double total = 0;
/* add all the elements from scores to total */
total / size;
cout << total << endl;

And for the compute_average when writing it without a function, there are no cins right? Just a cout >> average ?

cout << average etc. Use << for output. >> is for input.