opr.cod

我在三做的课程

=== COMPILE PL0 ===
  0 PROGRAM XYZ; 
  0 VAR A,B,C,D; 
  1 BEGIN 
  2 A:=20; 
  4 B:=10; 
  6 A+=B+10; 
 12 WRITE(A); 
 14 A-=B+10; 
 20 WRITE(A); 
 22 A++; 
 26 WRITE(A); 
 28 A--; 
 32 WRITE(A); 
 34 ++A; 
 39 WRITE(A); 
 41 --A; 
 46 WRITE(A); 
 48 WRITE(A++); 
 54 WRITE(++A); 
 60 WRITE(--A); 
 66 WRITE(A--); 
 72 END. 
  0  JMP   0   0
  1  INI   0   0
  2  LIT   0   0
  3  STO   0   0
  4  LIT   0   0
  5  STO   0   0
  6  LOD -20   0
  7  LOD -10   0
  8  LIT   0   0
  9  OPR   0   0
 10  OPR   0   0
 11  STO -20   0
 12  LOD -20   0
 13  OPR   0   0
 14  LOD -20   0
 15  LOD -10   0
 16  LIT   0   0
 17  OPR   0   0
 18  OPR   0   0
 19  STO -20   0
 20  LOD -20   0
 21  OPR   0   0
 22  LOD -20   0
 23  LIT   0   0
 24  OPR   0   0
 25  STO -20   0
 26  LOD -10   0
 27  OPR   0   0
 28  LOD -10   0
 29  LIT   0   0
 30  OPR   0   0
 31  STO -10   0
 32  LOD -10   0
 33  OPR   0   0
 34  LOD -10   0
 35  LIT   0   0
 36  OPR   0   0
 37  STO -10   0
 38  LOD -10   0
 39  LOD -10   0
 40  OPR   0   0
 41  LOD -10   0
 42  LIT   0   0
 43  OPR   0   0
 44  STO -10   0
 45  LOD -10   0
 46  LOD -10   0
 47  OPR   0   0
 48  LOD -10   0
 49  LOD -10   0
 50  LIT   0   0
 51  OPR   0   0
 52  STO -10   0
 53  OPR   0   0
 54  LOD -10   0
 55  LIT   0   0
 56  OPR   0   0
 57  STO -10   0
 58  LOD -10   0
 59  OPR   0   0
 60  LOD -10   0
 61  LIT   0   0
 62  OPR   0   0
 63  STO -10   0
 64  LOD -10   0
 65  OPR   0   0
 66  LOD -10   0
 67  LOD -10   0
 68  LIT   0   0
 69  OPR   0   0
 70  STO -10   0
 71  OPR   0   0
 72  OPR   0   0
~~~ RUN PL0 ~~~
40.000000
20.000000
21.000000
20.000000
21.000000
20.000000
20.000000
22.000000
21.000000
21.000000
~~~ END PL0 ~~~