\version "2.19.49"

\score {
  \new PianoStaff <<
    \new Staff = "upper"
    
    \relative c'' {
    \time 4/4
    \key c \major
    
    c4 c c,,\rest c'' |
    
    
    
    }
    
    \new Staff = "lower" 
    \relative c {
    \clef bass 
    \key c \major
    
   
    
      
    }
  >>
  \layout { }
  
}

%{
convert-ly.py (GNU LilyPond) 2.19.80  convert-ly.py: Processing `'...
Applying conversion: 2.19.2, 2.19.7, 2.19.11, 2.19.16, 2.19.22,
2.19.24, 2.19.28, 2.19.29, 2.19.32, 2.19.40, 2.19.46, 2.19.49
%}