too few arguments to function

Projects Programming
1

hello freinds

what is wrong in this Syntax

void setup(){}

boolean function(boolean variable)
{
  //Statement ....
  return variable
}
void loop ()
{
   if(function()==1)
    {
       //Statement....
     }
}

i dont know why the compiler refuse this syntax and show me this error description

exit status 1
too few arguments to function
2

You have told the compiler that function takes one argument, then when you called it, you don't give it one

3

So now what is the correct to use a function as a condition on if statement!!!

4

since you have declared function to return a boolean and to have one argument,
this is how you use it

boolean aBoolean = false;
if (function(a) == true)
{
...
}
5

thanks very very very much for your information :slight_smile: :slight_smile: :slight_smile:
it's work
i should declare two time the variable that i wont to use as a parameter of function like this

bool A = false;

function(bool A)
{
   //code....
   return A;
}

void loop()
{

  if(function(A)==true)
{
    // Statement....

}

}
6

It is not a good idea to use the same name for a variable that is local to a function as that of another variable with a different scope. It will be confusing to decide which version you are dealing with at some point in the program

Better to give the variable inside the function a different name to avoid the confusion.

Note that in the case of your example the variable A is global and does not actually need to be passed to the function or returned from it anyway