int squareNum (int a) {
return a*a;
}
int : return type
squareNum : function name
int a : parameter type and name
return a*a : return a value (same type as the return type defined at the beginning)
If you have a function declared you can call it anywhere else in the code.
Here is an example of calling a function:
void setup(){
Serial.begin(9600);
}
void loop() {
int i = 2;
int k = squareNum(i); // k now contains 4
Serial.println(k);
delay(500);
}
int squareNum(int a)...
