Difference between revisions of "C Coding Standard"

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[[Category:Coding Standards]]
 
[[Category:Coding Standards]]
 
{{UnderConstruction}}
 
{{UnderConstruction}}
 +
==Language consideration==
 +
* Avoid using assignment inside an expression.
 +
* Never use '''goto'''
 +
* Never use '''return''' if this is not the last instructions of a routine
 +
* Use '''break''' only to separate branches of a switch statement
  
 +
==Style==
 
*  Always use curly braces, even when there is only one instruction. Instead of
 
*  Always use curly braces, even when there is only one instruction. Instead of
 
<c>if (a) do_something();
 
<c>if (a) do_something();
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}
 
}
 
</c>
 
</c>
 
* Avoid using assignment inside an expression.
 

Revision as of 09:01, 22 July 2009

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Language consideration

  • Avoid using assignment inside an expression.
  • Never use goto
  • Never use return if this is not the last instructions of a routine
  • Use break only to separate branches of a switch statement

Style

  • Always use curly braces, even when there is only one instruction. Instead of
if (a) do_something();

write

if (a) {
	do_something();
}
  • Place opening brace at the same line as the condition as in
while (expr) {
	...
}
for (;;) {
	...
}

unless the expression is very long as in

if
	(very_long_expression)
{
	...
}
  • Surround else with braces as in
if (expr) {
	...
} else {
	...
}