C array index in parentheses

Question

I happened to see quantSpec[(1024)] in FDKAAC audio codec. It's written in C, C++.

What does the parenthesis mean? Is it not as same as quantSpec[1024]?

It's just some redundant syntax that detracts from readablility. Do not copy. — user207421
– user207421, Commented Mar 16, 2015 at 1:44

orlp · Accepted Answer · 2015-03-16 01:39:49Z

3

It means nothing, they're exactly the same.

answered Mar 16, 2015 at 1:39

orlp

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R Sahu · Accepted Answer · 2015-03-16 01:52:08Z

2

Use of parentheses is necessary when you want to change the order of precedence of operations when evaluating an expression. Sometimes, especially in long expression in the conditionals of if and while statements, presence of parenthesis make the code easier to read.

3 + 5*10 == 2 + 50

You can change the order of operations by using parenthesis:

(3 + 5)*10 == 8*10

In the example that you have presented, removing the parenthesis will not change anything.

edited Mar 16, 2015 at 1:52

answered Mar 16, 2015 at 1:44

R Sahu

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2 Comments

user207421 Over a year ago

It's the only way to change the precedence, but adding them where unnecessary, as here, doesn't make anything easier to read. It just provokes questions like this one.

R Sahu Over a year ago

@EJP, I have found long statements in the conditionals of if and while statements that are easier to read when there are paranthesis.

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