carduino-nano

Referring to a global variable over local one in Arduino Nano

In C code on Arduino Nano, how can I refer to a global variable with the same name as local one?
Example:

int speed = 0;
void setSpeed(int speed) {
  speed = speed; //  set global variable to local one's value
}
Solution

  • Rename the parameter.

    If you want the parameter to appear to be named speed in a header file, you can still declare the function as void setSpeed(int speed);. Only the definition needs to use a different name.