Increment Decrement Operators in C, C++ |Increment Decrement Operators in Programming Language |What is Increment Decrement Operators in Programming Language |Increment Decrement Operators in Computer Language |Types of Operators in Programming Language |Operators in C, C ++

    - : Increment - Decrement Operators :-

    These are Unary Operators (For single Operands) used to increase or decrease the value of operand by adding or subtracting 1 respectively. 

increment Operator - 

     increment Operator is used to increase the value of operand. Symbol of increment operator is double plus (++).

      There are 2 types of increment operator -

      (1) Pre-increment

      (2) Post-increment

   Pre-increment operator is used to increase operand value by 1, before assigning it to the expression. In pre-increment (++) used before operand.   Ex:-  (++a) 

value                      actual value                    visible value in output

++10                             11                                        11

   Post-increment operator is used to increase operand value by 1, after assigning it to the expression. In post-increment (+ +) used before operand.   Ex:-  (a++) 

 value                       actual value                     visible value in output

10++                               11                                         10

___________________________________________________________

A program for Increment operator 

#include <iostream>

using namespace std ;

int main () 

{  

     // declare integer variables  

int a = 10;

 cout<< "visible value of a after using Pre-increment = " << ++a <<endl;                       //Pre-increment 

cout<< "visible value of a after using Post-increment = " << a++ ;                                  //Post-increment 

return 0;  

}  

______________________________

Output -

visible value of a after using Pre-increment = 11

visible value of a after using Post-increment = 10

___________________________________________________________

Decrement Operator - 

     Decrement Operator is used to decrease the value of operand by 1. Symbol of decrement operator is double minus (- -).

      There are 2 types of increment operator -

      (1) Pre-decrement

      (2) Post-decrement

   Pre-decrement operator is used to decrease operand value by 1, before assigning it to the expression. In pre-decrement (- -) used before operand.   Ex:-  (- - a) 

value                       actual value                     visible value in output

- -10                               9                                          9

   Post-decrement operator is used to decrease operand value by 1, after assigning it to the expression.In post-decrement (- -) used after operand. Ex:- (a- -) 

 value                        actual value                      visible value in output

10- -                                 9                                          10

___________________________________________________________

A program for Decrement operator 

#include <iostream>

using namespace std ;

int main () 

{  

     // declare integer variable 

int a = 10;

 cout<< "visible value of a after using Pre-decrement = " << ++a <<endl;                        //Pre-decrement 

cout<< "visible value of a after using Post-decrement = " << a++ ;                                    //Post-decrement 

return 0;  

}  

______________________________

Output -

visible value of a after using Pre-decrement = 9

visible value of a after using Post-decrement = 10

___________________________________________________________

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