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Setting the precision for stringstream globally


By : user3851723
Date : October 15 2020, 11:12 PM
should help you out Probably the easiest way to do this is to replace your use of stringstream throughout your program with your own class that inherits from stringstream:
code :


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Precision problem with stringstream and double


By : Riswanto RastaFara
Date : March 29 2020, 07:55 AM
around this issue You can't handle "all double values" with arbitrary precision. In your case, you have about 15 decimal digits of precision. Write std::numeric_limits::digits10 to the console and you'll see.
Take a read through this guide to floating-point arithmetic.

Parsing float with stringstream - precision?


By : user2582689
Date : March 29 2020, 07:55 AM
around this issue The precision (along with things like fixed and scientific) only affect output; input will parse anything that looks like a numeric value, extracting all of the characters which could possibly be part of any numeric value. (This includes hex characters, and the 'X' which might occur for integral input.) If you want to limit the format in any way, you'll have to read it as a string, validate the format, and then use std::istringstream to convert it.

stringstream loses precision while converting


By : Abhner Gracias
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have a small problem with stringstream. It loses precision when I use it to convert string to double. , You need to set the precision on the output stream:
code :
#include <iostream>
#include <sstream>
#include <iomanip>
using namespace std;

int main() {
    const std::string str = "44.23331002";
    double x;
    stringstream ss;
    ss << str;
    ss >> x;
    cout << str << " = " << std::setprecision(10) << x << endl;
}
44.23331002 = 44.23331002

Convert a number from stringstream to string with a set precision


By : Priya
Date : March 29 2020, 07:55 AM
wish of those help It doesn't compile because ios_base::precision() returns streamsize (it's an integral type).
You can use stream manipulators:

Using stringstream precision to format floats but discarding zero-padding


By : David Shorten
Date : March 29 2020, 07:55 AM
should help you out Don't use ios::fixed for ios::floatfield. That's what causes the padding. Simply use setprecision.
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