for2.cod

为PL0编译器

=== COMPILE PL0 ===
  0 PROGRAM EX01; 
  0 VAR A,B; 
  1 BEGIN 
  2   FOR   A:=1 
  3   TO  10 
  6  B:=B+1; 
***  ^23
***    ^23
***        ^36
 17   WRITE(B); 
 20   FOR  A:=10 
 21   1 
***   ^23
 22   DO B:=B-1; 
***    ^23
***        ^23
***            ^36
 27   WRITE(B) 
 29 END. 
  0  JMP   0   1
  1  INI   0   5
  2  LIT   0   1
  3  STO   0   3
  4  LOD   0   3
  5  LIT   0  10
  6  LOD   0   4
  7  LOD   0   4
  8  LIT   0   1
  9  OPR   0   2
 10  OPR   0  13
 11  JPC   0  17
 12  LOD   0   3
 13  LIT   0   1
 14  OPR   0   2
 15  STO   0   3
 16  JMP   0   4
 17  LOD   0   4
 18  OPR   0  14
 19  OPR   0  15
 20  LIT   0  10
 21  LIT   0   1
 22  LOD   0   4
 23  LOD   0   4
 24  LIT   0   1
 25  OPR   0   3
 26  STO   0   3
 27  LOD   0   4
 28  OPR   0  14
 29  OPR   0  15
 30  OPR   0   0
ERROR IN PL/0 PROGRAM