Simple Unary Operators Example Program In C++

About this program

This is an example program in c operator example programs. Read the concept first: Arithmetic Operators Example in C++, then study the code and output below.

Read About C++ Operators

Unary Operators

There are two Unary Operators. They are Increment and Decrement.

Increment Unary Operator

variable++

++variable;

Is Equivalent i=i+1 or i+=1

Increment Unary Operator Types

• Post Increment i++
• Pre Increment ++i

Decrement Unary Operator

variable--;

--variable;

Is Equivalent i=i-1 or i-=1

Decrement Unary Operator Types

• Post Decrement i—
• Pre Decrement —i

Unary Operators Explanation

• ++i: increments l and then uses its value as the value of the expression;
• i++: uses l as the value of the expression and then increments l;
• —i: decrements l and then uses its value as the value of the expression;
• i—: uses l as the value of the expression and then decrements l.
• Change their original value.

Example Program For Unary Operators

// Header Files
#include<iostream>
#include<conio.h>

//Main Function

using namespace std;

int main ()
{
	// Variable Declaration
    int a = 10;
    
    cout << "Simple Unary Operators Example Program \n";
    
    /* Increment Operators */
	cout<<"\nPost Increment = "<<a++; //Post Increment

	a = 10;
	cout<<"\nPre Increment = "<<++a; //Pre Increment

    /* Decrement Operators */
	a = 10;
	cout<<"\nPost Decrement = "<<a--; //Post Decrement i--

	a = 10;
	cout<<"\nPre Decrement = "<<--a; //Pre Decrement i--
    
	// Wait For Output Screen
	getch();

	//Main Function return Statement
	return 0;
}

Sample Output

Simple Unary Operators Example Program

Post Increment = 10
Pre Increment = 11
Post Decrement = 10
Pre Decrement = 9

Related Pages

Learn the concept first, then study the code:

• C++ Programs — Browse all C++ Programs.
• Arithmetic Operators Example in C++ — Tutorial — arithmetic, relational and logical operators.
• Simple Relational Operator Example Program In C++ — More in c operator example programs.
• Simple Logical Operators Example Program In C++ — More in c operator example programs.