%{ %} oct [0][0-9]+ hex [0][x|X][0-9]+ %% oct {printf("%s is oct",yytext);} hex {printf("%s is hex",yytext);} %% int main() { printf("enter number"); yylex(); } int yywrap(){ return 1; }
Standard input is empty
Standard output is empty
ERROR: /home/YCrxw2/prog:16:0: Syntax error: Unexpected end of file ERROR: '$runtoplevel'/0: Undefined procedure: program/0 Exception: (3) program ? EOF: exit