-module(helloworld).
-import(string,[sub_string/3]).
-export([start/0]).
start() ->
Str1 = "hello world",
Str2 = sub_string(Str1,1,5),
io:fwrite("~p~n",[Str2]).
-module(helloworld).
-import(string,[sub_string/3]).
-export([start/0]).
start() ->
Str1 = "hello world",
Str2 = sub_string(Str1,1,5),
io:fwrite("~p~n",[Str2]).