Question: 1. What is the grammar accepted by this interpreter, write as EBNF form. 2. How can the bison program evaluate the input, print out the

1. What is the grammar accepted by this interpreter, write as EBNF form.

2. How can the bison program evaluate the input, print out the result 1. What is the grammar accepted by this interpreter, write as

EBNF form. 2. How can the bison program evaluate the input, print

calc1.1 /* calculator #1 */ %1 #include "y.tab.h" #include void yyerror(char*); [0-91+ yylval = atoi(yytext); return INTEGER; f return *yytext; I-+In] I It] /* skip whitespace / yyerror("Unknown character"); int yywrap (void) [ return 1

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