What is the difference between prefix and postfix increment operators

Active Oldest Votes. Two things on this line: i is incremented to The new value of i is copied into j. So j now equals Two things on this line as well: i is incremented to The original value of i which is 11 is copied into k. So k now equals The same stuff holds for postfix and prefix versions of I find it remarkable that people are still trying to edit this answer assuming I got the numbers wrong. All one has to do is run this code and print the values to see that I am correct.

The numbers are correct, but the code isn't explained very well. I would also add to this that the value categories of expressions differ. Show 4 more comments. Raktim Biswas 3, 5 5 gold badges 24 24 silver badges 30 30 bronze badges. Dilu Thankachan Dilu Thankachan 1 1 silver badge 2 2 bronze badges. Abdelrhman Fawzy Abdelrhman Fawzy 1 1 silver badge 6 6 bronze badges. Rafe Kettler Rafe Kettler Let's keep this as simple as possible. B First i is incremented then the console.

C Console. D Prints the value of i. Justin Meskan Justin Meskan 4 4 silver badges 18 18 bronze badges. The increment takes place after the value is returned. Alok Save Alok Save k 44 44 gold badges silver badges bronze badges. Explanation: Step 1: int fun int ; Here we declare the prototype of the function fun. Kevin Kevin Gargee Sanyal Gargee Sanyal 21 3 3 bronze badges. Jared Burrows Key Difference: Prefix and Postfix Operators are primarily used in relation to increment and decrement operators.

If the increment and decrement operators are written before the operand, then they are termed as prefix operators. Add new comment Your name. Plain text. Save Article. Improve Article. Like Article. These are very useful and common operators. Increment Operators: The increment operator is used to increment the value of a variable in an expression. In the Pre-Increment, value is first incremented and then used inside the expression. Whereas in the Post-Increment, value is first used inside the expression and then incremented.

Syntax: Take a step-up from those "Hello World" programs.