c++ long long int is not enough?? errors

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="81开发者_如何转开发33523648";
I have to convert it into long long int nr=8133523648

Thanks for help! Appreciate!

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);

It can be done in better way as follows:

#include <sstream>

stringstream sstr;
sstr << "8133522648";

long long nr;
sstr >> nr;

Don't use atoll() as it is not defined by C++ standard. Some compiler may implement it while others don't. Also,

std::string s = 8133522648;

doesn't mean

std::string s = "8133522648";

which was probably what you wanted.

Below code is working fine:

    #include <iostream>
    #include <cstdio>
    #include <cstdlib>

    using namespace std;

    int main() {

       std::string s= "8133522648";
       long long int nr = atoll(s.c_str());
       cout << nr;
    }