purpose of "const" when initializing and assigning a variable

[erikn]

what's the difference between

const int MAXVAL=10

and

int MAXVAL=10?


in both examples MAXVAL is assigned the integer value of 10 (?)

[moorecm]

This is the difference:

// your line here, then do:
MAXVAL = 100;

[Branflakes91093]

The const modifier is used to make a variable non-volatile, meaning that its value cannot be changed.

const int constvar = 10;
int var = 1;
...
constvar = 20; // Compile-time error
var = 2;

[erikn]

simple enough, thanks!

[hanst99]

non-volatile

I wouldn't use that word, cause volatile means something entirely different again.