How to split a string and convert it into an array of floats

Question

I want to convert the string into a float array They are saved as double strings Thanks for your help

string str ="7.13566982194977e-15,1.639519203260036e-43,4.149314136725479e-8,7.987401246651457e-44,7.11674964700695e-15,1.639519203260036e-43,4.515206005147025e+27"

std::vector<float> result

Use `std::istringtream` and `std::getline` with a custom separator. — molbdnilo, Mar 28 '23 at 08:15
OT: you're going to be a bit disappointed when `float` doesn't provide the precision you may be expecting... — Fe2O3, Mar 28 '23 at 08:16

score 2 · Accepted Answer · answered Mar 28 '23 at 08:18

2

std::istringstream(str);     // #include <sstream>
std::string s;
std::vector<float> result;
while (std::getline(str, s, ','))
{
    float f = atof(s.c_str());
    result.push_back(f);
}

answered Mar 28 '23 at 08:18

selbie

100,020
15
103
173

1

Probably because you answer a question that has a billion different duplicates (not the downvoter) – Yksisarvinen Mar 28 '23 at 08:24

How to split a string and convert it into an array of floats

1 Answers1