Void Function problem

[studentm]

Trying to use two void functions to display average of three test scores. Any help would be appreciated. Thanks

#include <iostream>
#include <iomanip>

using std::cout;
using std::cin;
using std::endl;
using std::fixed;
using std::setprecision;


//function prototypes
void getTestScores (double &, double &, double &);
double calcAverage(double);
void displayAverage (double);

int main()
{
double score1 = 0.0;
double score2 = 0.0;
double score3 = 0.0;
double average = 0.0;


//call functions
getTestScores (score1, score2, score3);
calcAverage (average);
displayAverage (average);


return 0;
} //end of main function


//*****function definitions*****
void getTestScores(double &score1, double &score2, double &score3)
{
cout << "Enter first test score:";
cin >> score1;
cout << "Enter second test score:";
cin >> score2;
cout << "Enter third test score:";
cin >> score3;
} //end of getTestScores function


double calcAverage (double &score1, double &score2, double &score3)
{
double average = 0.0;
average = (score1 + score2 + score3) / 3.0;
return average;
} //end of clacAverage

void displayAverage(double &average)
{
cout << "Average is: " << average << endl;

} //end of displayAverage

[mcleano]

Your problem is that once your function prototype for 'calcAverage' is different from its definition. Also, you're just calling that function ( which returns a value ) and not assigning it to anything.

Change the function call of calcAverage to:
average = calcAverage(score1, score2, score3);

Then it will work.

You should consider changing how you assign your score values though, the function 'getTestScores' isn't really using functions like you're supposed to. Arguments passed to a function usually contain a value that will be usefull to that function. You might be better off making 'getTestScores' more general and calling it 3 times within a loop from main, or just get the values from within main and ridding yourself of the function. Just something to think about.

[smalldog21]

What did your final program look like, just curious??