yunsuanfu2.cod

为PL0编译器

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