=== COMPILE PL0 ===
  0 PROGRAM SUBE; 
  0 VAR A,B; 
  1 BEGIN 
  2    A:=10; 
  4    A-=10+A; 
 10    B:=A; 
 12    WRITE(B) 
 14 END. 
  0  JMP   0   1
  1  INI   0   5
  2  LIT   0  10
  3  STO   0   3
  4  LOD   0   3
  5  LIT   0  10
  6  LOD   0   3
  7  OPR   0   2
  8  OPR   0   3
  9  STO   0   3
 10  LOD   0   3
 11  STO   0   4
 12  LOD   0   4
 13  OPR   0  14
 14  OPR   0  15
 15  OPR   0   0
~~~ RUN PL0 ~~~
-10
~~~ END PL0 ~~~