return
Terminate a function and return a value from a function to the calling function, if desired.
Syntax
return;
return value; // both forms are valid
Parameters
value
: any variable or constant type
Example
A function to compare a sensor input to a threshold
int checkSensor(){ if (analogRead(0) > 400) { return 1; else{ return 0; } }
The return keyword is handy to test a section of code without having to “comment out” large sections of possibly buggy code.
void loop(){ // brilliant code idea to test here return; // the rest of a dysfunctional sketch here // this code will never be executed }
See also
- comments
The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.