%{ #include<stdio.h> %} %% if | else | while | for {printf("%S is a keyword",yytext);} %% int main() { printf("\n Enter the string: "); yylex(); } int yywrap() { return 1; }
Standard input is empty
Standard output is empty
ERROR: /home/aPPwRR/prog:18:0: Syntax error: Unexpected end of file ERROR: '$runtoplevel'/0: Undefined procedure: program/0 Exception: (3) program ? EOF: exit