Passing arrays to a function?

Question

C++ / C#

How can I pass a dimensionless array to a function so that it can be changed in the array and not return it return
Example

void inputReport(char LenRaportTXT[]) {
  
}
char* LenRaportTXT = new char;
inputReport(LenRaportTXT);

Answer 1

To pass an array of unknown size as the first function argument, use a pointer to this array, as part of the second - its size.