How to 'cout' the correct number of decimal places of a double value?

Question

I need help on keeping the precision of a double. If I assign a literal to a double, the actual value was truncated.

int main() {
    double x =         


        

Answer 1

You must use setiosflags(ios::fixed) and setprecision(x).

For example, cout << setiosflags(ios::fixed) << setprecision(4) << myNumber << endl;

Also, don't forget to #include .