from string to int

[Zara]

Hello everyone!!

I'm new in C++ and I would appreciate any idea how to convert a string of digits into integer it represents. For ex. "15" to 15.

Zara

[MrHutch]

Use stoi: http://msdn.microsoft.com/en-us/library/ee404860.aspx

[codekiddy]

Or use custom function if your want so:

template <class T>
inline T ToNumber(const string& text)
{
	stringstream ss(text);
	T result;
	ss >> result;

	if (result)
	{
		return result;
	}
	else
	{
		return 0;
	}
}

or use atoi

[shadow123]

Or much simpler:
atoi: http://www.cplusplus.com/reference/clibrary/cstdlib/atoi/

[Peter87]

One possible problem with std::atoi is when it returns 0 you don't know if it failed or not.

[guestgulkan]

that same issue applies to the template function as supplied by codekiddy

[Zara]

Thank you All for help!