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Yacc program to recognize a valid variable which starts with letters followed by any number of level of digits?
Wiki User
∙ 12y ago
%{
#include<stdio.h>
int valid=1;
%}
%token digit letter
%%
start : letter s
s : letter s
| digit s
|
;
%%
int yyerror()
{
printf("\nIts not a identifier!\n");
valid=0;
return 0;
}
int main()
{
printf("\nEnter a name to tested for identifier ");
yyparse();
if(valid)
{
printf("\nIt is a identifier!\n");
}
}
Wiki User
∙ 12y ago
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