taking avg of array

[thepox]

Write your question here.

#include <iostream>
#include <cmath>
 using namespace std;
 int FillFunction(double []);
 void PrintArray(const double [], int);
 double findAverage (double array[], int size, double returnvalue);


 const int MAXSIZE =100;

 int main()
 {
 double array1[100];
 int count;


 count = FillFunction(array1);
 cout<<"There is "<<count<<" numbers in this array"<<endl;

 PrintArray(array1, count); //function call to function that will print the array

 cout<<"The average of all these numbers is " << endl;
findAverage (double array[], int size, double returnvalue);



 return 0;
 }

 //Write the function here to read in numbers into the array. The array is called myarray.
 //add comments describing what this function does, what is passed to it, what it sends back, etc.
 int FillFunction(double myarray[]){
 using namespace std;
 cout << "Enter no more than 100 positive numbers \n";
 int next, index = 0;
 cin >> next; 

 while (( next >= 0 ) && ( index < MAXSIZE )){
 myarray[index]= next;
 index++;
 cin >> next;
 }

 return index;
 }

 //Write the new function here along with comments
 //add comments describing what this function does, what is passed to it, what it sends back, etc.
 void PrintArray(const double a1[], int size)
 {
 for ( int i =0; i < size; i++)
 cout << a1[i] << " ";
 cout<< endl;
 }

 double findAverage (double array[], int size, double returnvalue)
{ 

    for(int i = 0; i < size; i++ ) {
        returnvalue += array[ i ];
    }

    return (returnvalue / size );
}

I have to write a third function that will determine the average value in the array.. I have literally been working on this shit all day and cant figure it out haha.. Any help would be GREATLY appreciated

[mobotus]

Your not passing args. into your function on line 23 to start with.

[Chervil]

Function findAverage(), there's no need to pass returnvalue as an input parameter. Simply define it inside the function.

double findAverage (double array[], int size)
{ 
    double returnvalue = 0.0;

    for (int i = 0; i < size; i++ ) {
        returnvalue += array[ i ];
    }

    return (returnvalue / size );
}

Inside main(), you could call it like this:

    cout << "The average of all these numbers is " 
         << findAverage(array, count) << endl;

or something like that.

Don't forget to change the prototype declaration at line 6 to match the changed function definition.