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Format float variable output in c++ using std::ofstream

I have the following code:

std::ofstream myfile;
std::stringstream filename3;
myfile.open("results.txt");

myfile << "precision= " << precision << "\n";

And the output in my file is formatted like this:

precision= 5.96e-07...

How can I print the numeric value as a number instead of a numeric value expressed using e?

like image 432
obelix Avatar asked Jan 30 '14 13:01

obelix


1 Answers

Use stream manipulator fixed:

myfile << "precision= " << std::fixed << precision << "\n";

You might also want to use setprecision to adjust the number of decimal digits.

like image 104
jrok Avatar answered Nov 15 '22 01:11

jrok