Use reference parameters to create the swap() function. : reference parameter « Function « C++ Tutorial

1.	Language Basics
2.	Data Types
3.	Operators statements
4.	Array
5.	Development
6.	Exceptions
7.	Function
8.	Structure
9.	Class
10.	Operator Overloading
11.	Pointer
12.	File Stream
13.	template
14.	STL Introduction
15.	string
16.	vector
17.	list
18.	bitset
19.	set multiset
20.	valarray
21.	queue stack
22.	deque
23.	map multimap
24.	STL Algorithms Modifying sequence operations
25.	STL Algorithms Non modifying sequence operations
26.	STL Algorithms Binary search
27.	STL Algorithms Sorting
28.	STL Algorithms Merge
29.	STL Algorithms Min Max
30.	STL Algorithms Iterator
31.	STL Algorithms Heap
32.	STL Algorithms Helper

C / ANSI-C

C Tutorial

C++

Visual C++ .NET

C++ Tutorial » Function » reference parameter

7.4.2.Use reference parameters to create the swap() function.

#include <iostream> 

using namespace std; 

 

void swap(int &x, int &y); 

 

int main() 

{ 

  int i, j; 

 

  i = 10; 

  j = 20; 

 

  cout << "Initial values of i and j: "; 

  cout << i << ' ' << j << '\n'; 

 

  swap(j, i); 

 

  cout << "Swapped values of i and j: "; 

  cout << i << ' ' << j << '\n'; 

 

  return 0; 

} 

 

void swap(int &x, int &y) 

{ 

  int temp; 

 

  temp = x;  

  x = y;     

  y = temp;  

}

Initial values of i and j: 10 20
Swapped values of i and j: 20 10

7.4.reference parameter
	7.4.1.	Using a reference parameter.
	7.4.2.	Use reference parameters to create the swap() function.
	7.4.3.	Pass by reference by using pointer
	7.4.4.	Pass by reference using references
	7.4.5.	Returning multiple values from a function using references
	7.4.6.	Passing references to objects

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.