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The difference between n++ and ++n at the end of a while loop? (ANSI C)

The only difference between n++ and ++n is that n++ yields the original value of n, and ++n yields the value of n after it’s been incremented. Both have the side effect of modifying the value of n by incrementing it. If the result is discarded, as it is in your code, there is no effective difference. If your program is behaving differently depending on whether you write n++; or ++n; it must…

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#c #increment #post-increment #pre-increment

Javascript pre-increment vs post-increment vs increment-equal

Test on:Node v.14.17.3Pre-increment – increment then read the variable, example:++jPost-increment – read the variable then increment, example:k++Increment-equal – increment then read the variable, example:l+=1Test code: console.log('--- j'); let j = 1; console.log(++j); console.log(j); console.log('--- k'); let k = 1; console.log(k++); console.log(k); console.log('--- l'); let l =…

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#javascript #node.js #post-increment #pre-increment

Fixed: What is x after "x = x++"? #it #answer #programming

What is x after "x = x++"?

What happens (behind the curtains) when this is executed?

int x = 7; x = x++;

That is, when a variable is post incrementednand assigned to itself in one statement? I compiled and executed this. x is still 7 even after the entire statement. In my book, it says that x is incremented!

Answer [by F.J]: What is x after "x = x++"?

It’s incremented after “x = x++;“. It…

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#java #operators #post-increment

How to: Difference between i++ and ++i in a loop?

Difference between i++ and ++i in a loop?

Is there a difference in ++i and i++ in a for loop? Is it simply a syntax thing?

Answer: Difference between i++ and ++i in a loop?

One (++i) is preincrement, one (i++) is postincrement. The difference is in what value is immediately returned from the expression.

// Psuedocode int i = 0; print i++; // Prints 0 print i; // Prints 1 int j = 0; print ++j;…

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#language-agnostic #post-increment #pre-increment

Fixed Is there a performance difference between i++ and ++i in C? #dev #it #asnwer

Is there a performance difference between i++ and ++i in C?

Is there a performance difference between i++ and ++i if the resulting value is not used?

Answer: Is there a performance difference between i++ and ++i in C?

Executive summary: No.

i++ could potentially be slower than ++i, since the old value of i might need to be saved for later use, but in practice all modern compilers will optimize…

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#c++#optimization #performance #post-increment #pre-increment

How to: Is there a performance difference between i++ and ++i in C++?

Is there a performance difference between i++ and ++i in C++?

We looked at this answer for C in this question:

http://stackoverflow.com/questions/24886/is-there-a-performance-difference-between-i-and-i-in-c

What’s the answer for C++?

Answer: Is there a performance difference between i++ and ++i in C++?

[Executive Summary: Use ++i if you don’t have a specific reason to use i++.]

For C++, the…

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#c #optimization #performance #post-increment #pre-increment

How to: What is x after "x = x++"?

What is x after "x = x++"?

What happens (behind the curtains) when this is executed?

int x = 7; x = x++;

That is, when a variable is post incrementednand assigned to itself in one statement? I compiled and executed this. x is still 7 even after the entire statement. In my book, it says that x is incremented!

Answer: What is x after "x = x++"?

It’s incremented after “x = x++;“. It would be 8 if…

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#java #operators #post-increment

How to: Is there a performance difference between i++ and ++i in C?

Is there a performance difference between i++ and ++i in C?

Is there a performance difference between i++ and ++i if the resulting value is not used?

Answer: Is there a performance difference between i++ and ++i in C?

Executive summary: No.

i++ could potentially be slower than ++i, since the old value of i might need to be saved for later use, but in practice all modern compilers will optimize…

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#c #optimization #performance #post-increment #pre-increment

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