absolute value for long long it

[chanu]

How to obtain absolute value for an "long long int" n gcc-4.8.2

The following code facing compilation error , i used llabs(x) too , how to get rid out of that ?

Thanks in advance :)

   #include<iostream>
#include<cmath>

using namespace std;

int main() {
    long long int x;

    cin >> x;
    cout << abs(x);
    return 0;
}

[chanu]

Following is compilation error

In function 'int main()':
error: call of overloaded 'abs(long long int&)' is ambiguous

[Chervil]

It works for me with MinGW GCC 4.8.1 32-bit.

Maybe try #include <cstdlib>

#include <iostream>
// #include <cmath>
#include <cstdlib>

using namespace std;

int main() 
{
    long long int x;

    cin >> x;
    cout << abs(x);
    return 0;
}

http://www.cplusplus.com/reference/cstdlib/abs/

[chanu]

Thanks @chervil