Erlang - str

The method returns the index position of a sub string in a string.

Syntax

str(str1,str2)

Parameters

• str1 − This is the string which needs to be searched.

• Chr1 − This is the character which needs to be searched in the string.

Return Value

Returns the index position of the character in the string.

For example

-module(helloworld). 
-import(string,[str/2]). 
-export([start/0]). 

start() -> 
Str1 = "hello World", 
Index1 = str(Str1,"hello"), 
io:fwrite("~p~n",[Index1]).

Output

When we run the above program, we will get the following result.

1