Question

Is it all right to call a function that returns a value without storing the value returned in a variable?
Here is some sample code:

class Test
{ 
  int days[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

  boolean validity()
  { 
     //some code
     isLeap();
  }

  boolean isLeap(int y)
  {
       if(y%400==0 || (y%100!=0 && y%4==0))
       {
          days[1] = 29;             
          return true; 
       }
       else
       {
          days[1] = 28;         
          return false;
       }
  }
}

Answer 1

Yes, it is allowed. The compiler won’t throw an error. But in your case it does not make any sense to use up processor time for something unnecessary.