The compiler doesn't check your indentation at all. (OK, not true, these days you get warnings for misleading indentation.) But here's an example of misleading indentation in C:

    if(some condition)
        do something; {
        do something else;
    }
    do another thing;

You can stretch 'some condition' out over multiple lines and have some more parents inside of it, to make it more confusing.

See also https://softwareengineering.stackexchange.com/a/16530

I see.

Yes

I class that as a bug in the original C specification

But you either make visual indentation significant, or you risk having a discrepancy between visual indentation and what the language sees.

> But you either make visual indentation significant...

That would be Python. I do not like it, which does not mean it is bad, it is a matter of taste

The alternative is you say "blocks are delimited by {}"

`if(foo) bar` should be invalid

`if(foo){bar}` is OK by me. Worik's tick of approval

(Neither is valid C I think)

> That would be Python.

Not necessarily. In practice, in C-as-actually-used people (should) set up linters and formatters, so that you can rely on indentation.

When programming, this means that you can behave as if both curly braces and indentation are significant, and you get an error when they are out-of-sync.