a++ is a unary operator a+=1 is a binary operator.Originally Posted by karthigayan
Example:
unary: a++ it has only one operant.
binary: a+b it had two operant "a" and "b".
a++ is a unary operator a+=1 is a binary operator.
Example:
unary: a++ it has only one operant.
binary: a+b it had two operant "a" and "b".
I don't know if theres a difference between x++ and x += 1, but there is a difference between the post and pre-increment operators. ++x is actually faster than x++ since the latter requires the original values of x to be stored in a temporary variable and then returned. This is not so much a problem with primitives like int etc since the compiler will optimize it anyway.
Note that C does not allow user defined operator overloading.
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I read a while ago that, for modern x86 processors, "add some_register, 1" is actually faster than "inc some_register". As a result, GCC will never generate the "inc" instruction, at least if you tell it to optimize for any modern processor.
