float f (int i)
 {
   int j; float r;
   j= i*i; r= j;
   return r;
 }
 	     v
 	ANALYSE INPUT
 	     v
 a function with 1 parameter and 2 variables

 		= (int)

 var 1 (int)		* (int)

 	  param 1 (int)		param 1 (int)

 		= (float)

 var 2 (float)		convert int to float

 			     var 1 (int)

 return (float)

 		var 2 (float)
 	     v
 	GENERATE OUTPUT
 	     v

 	text of program (characters)
 		v
 A	LEXICAL 			   <-names->	 D
 N	  words = (syntactic, semantic) 		 I
 A		v					 C
 L	SYNTACTIC					 T
 Y	  assemble words into sentences 		 I
 S		v					 O
 I	SEMANTIC		   <-declarations->	 N
 S	  bind meanings to names			 A
 		v					 R
 G	GLOBAL OPTIMISATION				 Y
 E
 N		v
 E	CODE GENERATION 	<-addresses->
 R
 A		v
 T	PEEPHOLE OPTIMISATION
 E
 		v
 	      run-time				debugging