Increment and Decrement operators

Increment operators (++)

• Increment operators are increase the value of subsequent. value may be increase according to the programmer.
• Increment operator are two types as follows :
  1. Post increment
  2. Pre increment

 Decrement operators ( -- )

• decrement operators decrease the value to one, two and so on.
• As like Increment operators, decrement operators are also two type as : 
  
  1. Post decrement
  2. Pre decrement

Before we more discuss about increment and decrement operator, let understand some expression; that's are using in all operators.

Now some issues of pre and post increment and decrement, we will discuss after solve following programming :

 x = 5       x = 5     x = 5  
 x = x+1      ++x       x++    
 x = 6       x = 6      x=5       

In above program u notice that value of x increase to one in all three expression but after the increasing one, the final value of x in not same, third box result is differ to another two boxes. Now you know that c operators are mostly three types, ++ and -- operators are Unary operators.

Post increment or decrement are lowest precedence so it is solve at the end of program. Hence above program in third box first value of x is print i.e. 5 after, it is increase.

Unary operators are solve right to left.

Q.1 Solve the expression in C language compiler ,assuming x,z are integer variables:

z = x++ + x++

where x=7

Ans.