Question

I’m trying to write 67.5 as 006750 with code below:

 float price = 67.5
 stringstream symbol;
 symbol << setfill('0') << setw(6) << fixed << setprecision(2) 
        << noshowpoint << price;

but output is 067.50

Answer 1

You are confused. std::noshowpoint only eliminates the trailing .0 on integer floats, for example 60.0 gets outputted as 60, it doesn’t simply remove the point on all numbers.

To get what you want you can do this:

float price = 67.5;
std::stringstream symbol;
symbol << std::setfill('0') << std::setw(6) << int(100 * price);