Pass by everything lel

//http://pastebin.com/u/TheWhiteFang
//pass by everything
//Return by value
int DoubleValue(int nX)
{
 int nValue = nX * 2;
 return nValue; // A copy of nValue is returned here
} // nValue goes out of scope here
---------------------------------------------------------------------------------------------------------------------------------//Return by reference
int& DoubleValue(int nX)
{
    int nValue = nX * 2;
    return nValue; // return a reference to nValue here
} // nValue goes out of scope here

struct FixedArray25 {
 int anValue[25];
};

int& Value(FixedArray25 &rArray, int nIndex) {
 return rArray.anValue[nIndex];
}

int main() {
 FixedArray25 sMyArray;
 // Set the 10th element of sMyArray to the value 5
 Value(sMyArray, 10) = 5;
 cout << sMyArray.anValue[10] << endl;
 return 0;
}

---------------------------------------------------------------------------------------------------------------------------------//Return by Address

    int* DoubleValue(int nX)
    {
    int nValue = nX * 2;
    return &nValue; // return nValue by address here
    } // nValue goes out of scope here

    int* AllocateArray(int nSize)
    {
    return new int[nSize];
    }

int main()
{
 int *pnArray = AllocateArray(25);
 // do stuff with pnArray
 delete[] pnArray;
 return 0;
}
---------------------------------------------------------------------------------------------------------------------------------//more examples

#include <iostream>
using namespace std;

void method1(int *inVal){ //pass by reference

    *inVal = 5;
};
void method2(int &inVal){ //pass by address

    inVal = 5;
};
int method3(int inVal){ //pass by value
    return 5;
};

int main()
{
    int data1 = 0, data2 = 0, data3 = 0;

    method1(&data1);//pointer needs input address
    method2(data2);//method2 function will change the value in address data2
    data3 = method3(data3);//function passes value to data3
    cout << data1 << endl;
    cout << data2 << endl;
    cout << data3 << endl;

}