Style and performance question

[Script Coder]

Which is better:

{
	char temporary_char_c;
	string temporary_string_s;
	for(int i=0; i<some_n; ++i) {
		//some code that uses c and s
	}
}

or

char temporary_char_c;
string temporary_string_s;
for(int i=0; i<some_n; ++i) {
	//some code that uses c and s
}

[Bourgond Aries]

#define better

In your first sample, you put the code into a scope, in the second we can only guess it's in a function scope.

[Script Coder]

both can be assumed to be in the main function. By better, I mean style and performance wise - as the title states.

[ne555]

//some code that uses c and s
`c' is uninitialized, so they are both crap

[Script Coder]

`c' is uninitialized, so they are both crap

Sorry, assume they are initialised. What I am trying everyone to look at is the scoping.