10.Lex program to print every lines in a file with its line number

Question is self explanatory

Here is the code:


%{
    int i=0;
%}
%%
[a-z A-Z]+ {printf("%d:%s",i,yytext);i++;}
%%

main()
{
extern FILE *yyin;
yyin=fopen("new","r");
yylex();
}