Coventing string to int/int to string

[oLC9216C]

If i have a string "123" how can I convert it to the int 123
also, how can I do it from int to string?

[Yanson]

http://www.cplusplus.com/reference/string/stoi/?kw=stoi

[Bourgond Aries]

You can use std::to_string(int) to turn a number into a string.
You can use std::atoi(string.c_str()) to turn a string into an integer.

[oLC9216C]

I tried aoit
But an error comes out
error: cannot convert 'std::basic_string<char>' to 'const char*' for argument '1' to 'int atoi(const char*)'|

my code is
cout << atoi(zip[0]);
where zip[0] is a vector of string.

[Bourgond Aries]

You need to access the const char * string that lies inside by doing:

std::cout << std::atoi(zip[0].c_str());

[oLC9216C]

Finally works, thank you for all of you