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Humble %{ #include <stdio.h>; %} %% if|else|while|int|switch|for|char {printf(“keyword”);} [a-z]([a-z]|[0-9])* {printf(“identifier”);} [0-9]* {printf(“number”);} .* {printf(“invalid”);} %% main() { yylex(); return 0; } int yywrap() { } Sample output else keyword humble identifier 9876 number
%{ #include<stdio.h> %} %% (a|A)[a-z]*[0-9]*(a|A) {printf(“matching”);} (a|A)+ {printf(“matching”);} .* {printf(“not matching”);} %% main() { yylex(); return 0; } int yywrap() { } Sample output anna matching asssdf not matching
Pycon 2013 India conference was held on Aug 30,31 & Sep 1st in Bangalore . This is the 5th year of PyCON India, conference was attended by more than 1100 or I would say Bangalore was filled with python enthusiasts 🙂 . The keynotes, sessions, workshops and panel discussion (on Python in education) were good …
Friday or drive by post here 🙂 How to install and use bit torrent clients in fedora? its as simple as that: You need to install ‘transmission’ package to get bit torrent client for fedora. Once you installed it, bit torrent client is ready to use for torrent action. You can either use ‘transmission” cli …
%{ #include& #include& int ln=0; %} %% “\n” {} .* {ln++;fprintf(yyout,”\n%d:%s”,ln,yytext);} %% main() { yyin=fopen(“try1.txt”,”r”); yyout=fopen(“try2.txt”,”w”); yylex(); return 0; } int yywrap() { } Sample output try1.txt hai hello world test file language processor try2.txt 1:hai 2:hello world 3:test file 4:language processor
%{ #include <stdio.h>; #include <string.h>; int i=0; %} %% ([a-z]|[A-Z][0-9])* {i++;} “\n” {printf(“%d\n”,i);i=0;} %% main() { yylex(); return 0; } int yywrap() { } Sample output pls check the output 4
%{ #include<stdio.h> #include<stdlib.h> %} %% ([a-z]|[A-Z])* {printf(“%d”,strlen(yytext));} %% main() { yylex(); return 0; } int yywrap() { } Sample output test line processed 4 4 9
%{ #include<stdio.h> %} %% (” “) {} %% main() { yylex(); return 0; } int yywrap() { } Sample output this is test file thisistestfile
%{ #include<stdio.h> %} %% (“<“|”<\\”)[a-z|A-Z|0-9]*”>” {printf(” “);} %% main() { yylex(); return 0; } int yywrap() { } Sample output <html>test file<\html> test file
%{ #include<stdio.h> #include<string.h> int al=0,aln=0,n=0,ln=0; %} %% ([a-z]|[A-Z])* {al++;} (” “)*.(\n) {} [0-9]* {n++;} (“\n”)*(” “)*(“\n”) {ln++;} ([a-z]|[A-Z]|[0-9])* {aln++;} %% main() { yyin=fopen(“inp.txt”,”r”); yylex(); printf(“Alphanumeric:%d\n alphabets:%d\n numbers:%d\n line:%d\n”,aln,al,n,ln); return 0; } int yywrap() { } Sample output inp.txt abc123 abcd efgh567 dfdfdgdf 1234 Alphanumeric:2 alphabets:2 numbers:1 line:4