Difference between revisions of "C Coding Standard"

m (Language consideration)
Line 3: Line 3:
 
==Language consideration==
 
==Language consideration==
 
* Avoid using assignment inside an expression.
 
* Avoid using assignment inside an expression.
* Never use '''goto'''
+
* Never use '''goto'''.
* Never use '''return''' if this is not the last instructions of a routine
+
* Never use '''return''' if this is not the last instruction of a routine.
* Use '''break''' only to separate branches of a switch statement
+
* Use '''break''' only to separate branches of a switch statement.
  
 
==Style==
 
==Style==

Revision as of 15:24, 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 instruction 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 {
	...
}