if elseif ( condition ) { command 1 } else { command 2 } if ( condition ) { command 1 } else if (cond) { command 2 } else if (cond) { command 3 } else command4
if ( x > 100 ) y=1 else y=0
if ( x > 100 ) { y=1 } else { y=0 }
if ( is.character(x) ) 1 else 5 for loopfor (i in 1:20) command for (i in 1:length(x)) for (i in v) { command1 command2 } |