How to pass a variable to a function?

Projects Programming
11

Works in main loop

              //Extract Date and Time from stringbuffer (which is of type char)
  char timeBuffer[15];
  timeBuffer[9] = '\0';
  for (int x = 5; x < 4 + dateLength; x++) 
  {
    timeBuffer[x - 5] = StringBuffer[x];
    Serial.print(StringBuffer[x]); //prints separate chars
  }
        Serial.println("");
        Serial.print("timeBuffer printed output is  ");    
        Serial.println(timeBuffer);

In Function

void getDateTime() {
              //Extract Date and Time from stringbuffer (which is of type char)
  char timeBuffer[15];
  timeBuffer[9] = '\0';
  for (int x = 5; x < 4 + dateLength; x++) 
  {
    timeBuffer[x - 5] = StringBuffer[x];
    Serial.print(StringBuffer[x]); //prints separate chars
  }
        Serial.println("");
        Serial.print("timeBuffer printed output is  ");    
        Serial.println(timeBuffer);    
} // endFunction

error is invalid types char[int] for array subscript, its still having a problem with seeing the stringbuffer variable in the function.

Which leads back to my original question - how do I get the Function to "see" the StringBuffer array (pointer?) variable in the main loop?