Question

I am trying to run the following program and it works but when I enter a value that is more than 6 decimal places it keeps getting rounded/truncated e.g. 2.999999 –> 3. How do I set it so it stops doing this?

int main()
{

    double n=0, x=0; 

    while (cin >> n >> x) //will keep going until an integer is not entered
    {
       cout << "You entered the two integers " << x << " and " << n << endl;

       if (x-n <= (1.0/10000000) && n-x <= (1.0/10000000)) 
          cout << "The numbers are almost equal" << endl;
    }

return 0;

}

Answer 1

You can change precision of the values that you print by using std::setprecision:

cout << "You entered the two integers " << setprecision(20) << x
     << " and " << n << endl;

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