INSS 615-555 Assignment 3-PM/Example of C++

#include <iostream>
using namespace std;
double computeAverage(double test1, double test2);
void printResults(double test1, double test2, double grade);
void getScores(double& test1, double& test2);
int main()
{
    double test1, test2, grade;

    getScores (test1, test2);
    grade=computeAverage (test1,test2);
    printResults(test1,test2,grade);
    system ("pause");
    return 0;
}
double computeAverage(double test1, double test2)
{
    double Average;
    Average=(test1+test2)/2;
    return Average;
}
void printResults(double test1, double test2, double grade)
{
    cout<<"The test1 score is"<<test1<<endl;
    cout<<"The test2 score is"<<test2<<endl;
    cout<<"The average score is"<<grade<<endl;
}
void getScores(double& test1, double& test2)
{
    cin>>test1;
    cin>>test2;
}