Sep 11, 2023 · I came across the C++11 stof but I have been using the extractor operator in stringstream instead within a helper function I created. However, now with C++11 stof / stoi / stod exist.

Sep 10, 2019 · What is difference between std::stof and atof when each one should be used? Asked 6 years, 3 months ago Modified 5 years, 6 months ago Viewed 9k times

Feb 15, 2013 · stof is a C++11 function. Make sure your compiler supports it (no compiler has full support for C++11 yet, though most modern compilers out there right now support a fairly large subset).

Jul 11, 2012 · The open-standard of the STL here (page 653) states that std::stof throws: invalid_argument if wcstod or wcstold reports that no conversion could be performed. However, it …

Jul 15, 2015 · Instead of std::stof(), which converts the string to a float, you should use std::stod(), which converts it to a double (with higher precision). But as others also said, even this way you often …

Mar 21, 2019 · The nearest IEEE754 float to 4.99 is 4.9899997711181640625. std::stof will return the latter. That multiplied by 100 is 498.999969482421875 which is truncated to 498. This is one of the …

Oct 7, 2022 · The issue probably isn't with std::stof, but is probably with the default precision of 6 in std::cout. You can use std::setprecision to increase that precision and capture all of your digits.

Oct 6, 2016 · Not 100% sure. stof calls strtod internally so I do not know if that will make a difference or not. In C++17 it will call strtof internally so it should be guaranteed then.

Mar 5, 2013 · I'm parsing a file with some numbers. I'm trying to change the numbers from string to float or double, but I found out a precision problem with stof and stod, they are off by slight amount in VS …

stof - convert str to a float stod - convert str to a double stold - convert str to a long double As conversion of string to int was also mentioned in the question, there are the following functions in C++11: stoi - …