 
      
      eof()
	Check whether the EOF flag of standard input is set or not. This is similar to C++'s ios::eof function	
	
eof()There are no parameters.
boolean — Returns true if the EOF flag is set, and returns false if otherwise
while !eof()
    s = readln()
    writeln(s)
endwhileThis function is available on Dinfio version 3.1.06 or later