Question

I am working in c++. I have a string that contains the following number

std::string s= "8133522648";

I want to convert this number in

long long int nr;

I did: nr=atoll(s.c_str()). The result is: -456410944. How to solve this error? Thanks

Edit:

In fact I have:

const char* str="8133523648";
I have to convert it into long long int nr=8133523648

Thanks for help! Appreciate!

Answer 1

use int64_t instead of long long. which is defined in stdint.h

If you rely on boost you can use

std::string s= "8133522648";
int64_t nr = boost::lexical_cast<int64_t, std::string>(s);