How would you implement a substr() function that extracts a sub string from a given string?
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Answer Posted / Bhudev Singh
In C++, you can use the std::string::substr() function to obtain a substring. Here's an example: `std::string s = "hello world"; std::string substr = s.substr(6);`, which will extract the substring starting from the 7th character (index 6) to the end.
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