Double being rounded?

[bulba5aur]

I'm using cpp.sh online to mess with some code, for some reason this is rounding to num to 3 instead of the actual value 3.4. Is this something I am doing wrong?

#include <iostream>

int main()
{
    double num = 68 / 20;
    std::cout << num; //num is 3?
}

[JLBorges]

// double num = 68 / 20; // integer division
double num = 68 / 20.0 ;

[bulba5aur]

Thank you JLBorges!