Passing by Reference Using Pointers : reference « Data Type « C++






  1. C++
  2. Data Type
  3. reference

Passing by Reference Using Pointers

  
#include <iostream>

using namespace std;
void swap(int *x, int *y);

int main(){
   int x = 5, y = 10;

   cout << "Main. Before swap, x: " << x << " y: " << y << endl;
   swap(&x,&y);
   cout << "Main. After swap, x: " << x << " y: " << y << endl;
   return 0;
}

void swap (int *px, int *py)
{
   int temp;

   cout << "Swap. Before swap, *px: " << *px << " *py: " << *py << endl;

   temp = *px;
   *px = *py;
   *py = temp;

   cout << "Swap. After swap, *px: " << *px << " *py: " << *py << endl;
}








Related examples in the same category

1.constant references
2.returning a reference to a string
3.using references for int
4.Reassigning a reference
5.Taking the Address of a Reference
6.swap() Rewritten with References
7.Passing Objects by Reference
8.Passing References to Objects
9.Returning multiple values from a function using references
10.Creating and Using References for integer
11.Data Slicing With Passing by Value
12.References for int type variable