xyz.cod

扩展PL0语言 对其扩展++,--,+=,-=运算等

=== COMPILE PL0 ===
  0 PROGRAM xyz; 
  0 VAR 
  1 A:INTEGER; 
  1 BEGIN 
  2   A:=2; 
  4   A:=A+++2;   
 12   WRITE(A); 
 14  
 14 END. 
  0  JMP   0   1
  1  INI   0   4
  2  LIT   0   2
  3  STO   0   3
  4  LOD   0   3
  5  LIT   0   1
  6  OPR   0   2
  7  STO   0   3
  8  LOD   0   3
  9  LIT   0   2
 10  OPR   0   2
 11  STO   0   3
 12  LOD   0   3
 13  OPR   0  14
 14  OPR   0   0
~~~ RUN PL0 ~~~
5.000000
~~~ END PL0 ~~~