avoid rounding error (floating specifically) c++

Question

http://www.learncpp.com/cpp-tutorial/25-floating-point-numbers/ I have been about this lately to review C++.

In general computing class professors tend not to cover thes

Answer 1

You want to use the manipulator called "Fixed" to format your digits correctly so they do not round or show in a scientific notation after you use fixed you will also be able to use set the precision() function to set the value placement to the right of the . decimal point. the example would be as follows using your original code.

 #include 
 #include 
    int main() {
          using namespace std;
          #include 


    double dValue = 0.19213;
    cout << fixed << setprecision(2) << dValue << endl


       }

outputs as:

dValue = 0.19