How can I return both values in my function? PLEASE HELP!!!

[Brac24]

HERE IS MY CODE:
Im having problems problems returning both values from my functions and writing them to a file

// INCLUDES:
#include <iostream>
#include <cstdlib>
#include <cmath>
#include <fstream>

// USING
using namespace std;

// FUNCTION PROTOTYPES:
double max_min_values (double value[], int N);
double sum_average (double value[], int N);
double std_deviation ( double value[], int N,double avg);

//////////////////////////////////////////////////////////
int main()
{
ifstream readstream;

double data[1000];
readstream.open("randomdata.txt");

if(!readstream){
cout << "\nCould not find file";

return(0);
}

for(int i=0; i<1000; i++){
readstream >> data[i];
cout << "data [ " << i << " ] " << data[i] << endl;

}
readstream.close();


double max_min = max_min_values(data,1000);

double avg = sum_average(data,1000);

double deviation = std_deviation(data,1000,avg);



ofstream writestream;

writestream.open("statistics_info.txt");

writestream << max_min << endl;



writestream << avg << endl;


writestream << deviation << endl;

writestream.close();






system("PAUSE");
return(0);

} // end main





//////////////////////////////////////////////////////////
// FUNCTION: functionname
// PURPOSE:
// INPUT PARAMETERS (include: 1. Type, 2.Ref or Val, 3.Description):
// RETURNS:
// MODIFIES(for globals or parameters passed by reference):
//////////////////////////////////////////////////////////
double max_min_values (double value [], int N)
{
double values;
double maxi = value[0];
double mini = value[0];
for(int i=0; i<N; i++){
if ( maxi < value[i] )
maxi = value[i];
if( mini > value[i] )
mini = value[i];


}

cout << "\nThe maximum value is " << maxi << endl;
cout << "\nThe minimum value is " << mini << endl;
values = maxi, mini;

return(values);





} // max_min_values






//////////////////////////////////////////////////////////
// FUNCTION: functionname
// PURPOSE:
// INPUT PARAMETERS (include: 1. Type, 2.Ref or Val, 3.Description):
// RETURNS:
// MODIFIES(for globals or parameters passed by reference):
//////////////////////////////////////////////////////////
double sum_average(double value[], int N)
{
double sum = 0;
double average;
for(int i=0; i<N; i++){
sum = sum + value[i];

average = sum/1000;

}
cout <<"\nThe sum of the values is " << sum << endl;
cout <<"\nThe average of the values is " << average << endl;
return (average);
return (sum);


} // end functionname





//////////////////////////////////////////////////////////
// FUNCTION: functionname
// PURPOSE:
// INPUT PARAMETERS (include: 1. Type, 2.Ref or Val, 3.Description):
// RETURNS:
// MODIFIES(for globals or parameters passed by reference):
//////////////////////////////////////////////////////////
double std_deviation(double value[], int N, double avg)
{


double sum = 0;
double deviation;

for(int i=0; i < N; i++){
sum = sum + pow((value[i]- avg),2);

}
deviation = sqrt(sum/(1000-1));

cout << "std deviation is " << deviation << endl;

return(deviation);



} // end functionname

[10oTURfi]

return (average);
return (sum);

Function is terminated with first return program execution encounters, therfore in this case it will not return sum.

[Brac24]

It actually doesn't return both max and min values either. I think im supposed to use pass by reference but im having trouble doing it.

can you please help

[D80DSL3A]

Yes, pass by reference will allow you to modify the values of as many variables as you wish. For your max_min_values() function try:
void max_min_values (double value [], int N, double& mini, double& maxi)
Declare two variables in main then pass them to the function when you call it:

double max;
double min;
max_min_values (data, 1000, min, max);

This will work for your sum_average() function also.

[zb0S216C]

What about a POD structure?

struct ReturnedData
{
    double Max, Min;
};

ReturnedData max_min_values( );

_Wazzak

[Brac24]

THANK YOU VERY MUCH "fun2code" that really helped a lot I really appreciate it. I was on this for hours but I understand it now.
thanks again

[Brac24]

@Framework thanks for the help but we havent learned that yet so I dont think we would be allowed to use it for the assignment
thanks again

[Moschops]

You've learned references but not structures? That seems astonishingly unlikely. Perhaps you just missed it.