c++ int passed to a function is not declaired although it's declaired before

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1

Hallo, in my code the int A is not declaired and I don't understand why.
I would like to pass A without problem into a for loop nested within an if.

code:

int A = SOME_DEFINED_NUM % OTHER_NUM; 
int k = VALUE;

void foo(int A) {                         
  if (A != 0) {                                           
      for (int i = 0; i < A; i++) {           
      color[i].val = 255 * abs(sin( (i * PI / OTHER_NUM)));    //this line works, color is a CHSV         
      ledHSV[(SOME_DEFINED_NUM  - A - 1) + i] = color[k]; //this line is the problem. A is not declaired here
  }
}
  1. Why is A not declaired? is there a way to make it declaired?
  2. Is it the for loop or the if loop?

Thank you very much

2

Hello, your code is incomplete.

Please stop wasting time.

Post all your code, post all your error messages.

Thank you very much.

3

Also, having two variables named A will not confuse the compiler but is likely to confuse you.

4

Read about scope.

5

The for() statement is missing a closing ‘}’.
Auto format the code to make such errors more obvious.