Thread: best practice for nested if stements ie - if x is true and y is true, then...

Hi all. I have a basic question about syntax for nested if statements and use of brackets.

Let's say I want to perform the following logic...
If a is greater than b , and a is also greater than c , then let x equal a.

Here is the code I have tried with no brackets.

Code:

 if(a > b) if (a > c) x = a;

Here is the code using brackets:

Code:

if(a > b) 
{
    if(a > c) x = a;
}

Will these two produce different results?
The answer is not obvious with my searches, but on-line compilers seem to work either way. I will be using this in GCC for embedded. Thanks for your help ?

Cheers,

Will these two produce different results?

No, but you may want to consider using a single if statement with multiple conditions.

Code:

if(a > b && a > c)
   x = a;

You may also want to consider using braces for all of your control statements, even simple single liners.

Also what happens if both conditions are false?

Thanks, jimblimberg. If both conditions are false then x is 0, so i assume i would include ...

Code:

 else x = 0;

within the same braces, or as per your suggestion.

Cheers,