Loops and Variable Initialization

[Yay295]

Will a variable initialized within a loop be destroyed and recreated every time it loops? Does it matter if the variable is initialized to something, or is a const?

int main ( )
{
    while ( something is true )
    {
        const int a = 1;

        int b = 2;

        int c;


        // do something
    }
}

[LB]

From your perspective, it is being created and destroyed each time. What really happens though depends on compiler optimizations.

[Yay295]

That's what I thought it might be. Would you happen to know how VS 2012 handles it?

[Cubbi]

That depends entirely on what "// do something" actually does.

[Yay295]

I guess the best thing to do then would be to initialize the variable outside of the loop and not worry about what different implementations might do.