How to Extract string?

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# 1  
Old 10-23-2007
How to Extract string?


I have string object,

string s1="abcdefghijk";

And I want to extract some part of string into the other string. e.g. extract 'def' into the string s2.

Is there any function to extract the string. I have included 'string.h' file.
I want the function which can extract string by mentioning the starting index and length of string or ending index.
# 2  
Old 10-23-2007
string s2 = s1.substr(4,3);

# 3  
Old 10-24-2007
Thank you very much !
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