[ACS] trying to initialize a static constant in for loop

[ROBO-KY]

Hello everyone, I just want to understand how static works in ACS. I tried to initialize a static variable in for loop but I got a compiler error.

This code was compiled successfully:

Code: Select all

script "test" (void) {
	for(static int i = 1 + 1; i < 10; i++) {}
}

But here I got a compiler error

Code: Select all

script "test" (void) {
	int j = 1;
	for(static int i = 1 + j; i < 10; i++) {} 
}

Syntax error in constant expression.
> for(static int i = 1 + j; (j symbol)

But if I remove static modifier everything will work. Is this a normal behavior or this is a bug?

[zd_mallard]

I'm no expert in ACS, but that's not valid in C either, so is probably intentional.

[nova++]

I can't even figure out what in the world you're trying to do.

[ROBO-KY]

I can't even figure out what in the world you're trying to do.

I'm testing the language behavior in different scenarios.

Btw, this code will not compile.

Code: Select all

function void loops(void) {
    for(int i = 0; i < 10; i++) {
        //TODO
    }

    for(int i = 0; i < 10; i++) { //shows error here because of 'redefined variable', which is strange because it's declaired in different scope
        //TODO
    }
}

[Jarewill]

Btw, this code will not compile.

That's because you already defined variable i inside the scope of the function.
This should fix it:

Code: Select all

function void loops(void) {
    for(int i = 0; i < 10; i++) {
        //TODO
    }

    for(i = 0; i < 10; i++) { //Instead of redefining the same variable again you can reuse it by setting it to 0 or define another variable in it's place such as int j
        //TODO
    }
}