Problem with returning values

[successu]

Hello! As im learning cpp I'm doing some exercises and I stumbled on a problem can I retrun only one value not changing other values and if I can how can I do it ?

#include <iostream>
#include <fstream>

using namespace std;

//        Global      //

const int cMax = 50;
int size;
//int vSize,tSize;
//vSize = sizeof vArray/sizeof (int);
//tSize = sizeof tArray/sizeof (int);


//           Links           //

int readFile(int vArray[],double tArray[]);
int sortArray(double tArray[],double btArray[]);

//  -----Functions------      //

int main(){
int vArray[cMax];
double tArray[cMax];
double btArray[cMax];
readFile(vArray,tArray);
sortArray(tArray,btArray);
 for(int i = 0;i<size;i++){
        cout << btArray[i] <<  "    " << tArray[i] << endl;
 }

}


//     Reading from file   //



int readFile(int vArray[],double tArray[]){
    int temp;
ifstream myfile ("u1");
    if(myfile.is_open()){
        myfile >> size;
            for(int i = 0;i<size;i++){
                    myfile >> vArray[i];
                    myfile >> tArray[i];
               }
            }
    myfile.close();
    return vArray,tArray,size;

    }

//      Finding biggest value    //



int sortArray(double tArray[],double btArray[]){
     double temp;
    for(int i = 0;i<size;i++){
        for(int j = 0;j<size;j++){
            if(tArray[i]>tArray[j]){
            temp = tArray[i];
            tArray[i] = tArray[j];
            tArray[j] = temp;
            }
        }

    }

     for (int i = 0;i<size;i++){
        btArray[i] = tArray[i];
    }
    return btArray;     //<--------------- My problem
}

[Peter87]

No need to return the array. The sortArray function already modifies the btArray array argument that you pass to the function.

[successu]

Yes but it also modifies tArray values and I want to return only btArray values.

[Peter87]

Now you do:
1. Sort tArray.
2. Copy tArray to btArray.

Instead you can do:
1. Copy tArray to btArray.
2. Sort btArray.

[iAk3T05o]

You could change you sorting code to one simple line of code

[Peter87]

Nathan2222 wrote:

You could change you sorting code to one simple line of code

Are you referring to std::sort?

[successu]

Thanks for suggestion Petter87 !

[iAk3T05o]

yes i am