?? output.txt
字號:
The Grammar of a while sentence:
******************************************
* (1) S --> while(A) B *
* (2) A --> N rop N *
* (3) B --> N = N op N *
* (4) N --> id *
******************************************
The while sentence is:
while(a rop b c = d op esd
Your input does not tally with the grammar!
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