What are the differences between std::strtol and std::stoi?

Question

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So I have known for a while that std::atoi has been deprecated and it's been recommended to use std::strtol instead.

C++11 has introduced std::stoi and I'm trying to understand why one would choose to use it over std::strtol.

From what I understand is that stoi calls strtol but throws exceptions. Also it returns an integer instead of a long.

Are these the main differences, what am I missing?

Answer 1

Are these the main differences, what am I missing?

The newer, std::stoi also works directly from std::string (so you don't have to litter your code with .c_str() calls) and optionally provides you the first unmatched character as an index via a size_t, rather than as a pointer.

These changes simplify the usage from within your code.