How can I convert string to float and back to string using a similar method?

Question

How can you convert the string 6.78 to a float? How can you convert a float 7.89 to a string?

Do both of these questions have similar answers?

atof() and ftoa() or sprintf() are your friends. – Yamodax Jun 13 '13 at 22:16 — Yamodax, Jun 13 '13 at 22:16
Do you man single precision float? – aka.nice Jun 14 '13 at 20:34 — aka.nice, Jun 14 '13 at 20:34

A.E. Drew · Accepted Answer · 2013-06-13T22:41:06.720

3

In the standard library <string> you have

std::string std::to_string(float val)

and

float std::stof (const std::string&  str, size_t* idx = 0)

edited Jun 13 '13 at 22:41

answered Jun 13 '13 at 22:17

A.E. Drew

score 0 · Answer 2 · edited May 23 '17 at 12:21

0

I agree with the AE Drew it works fine You can also use boost lexical cast if you have boost installed. Here is an example I found.

I also found that this question has been asked already so you can enjoy a fully contributed answer here:

Hope it helps

edited May 23 '17 at 12:21

Community

answered Jun 13 '13 at 22:24

Gabriel

score 0 · Answer 3 · answered Jun 13 '13 at 22:30

0

What is your environment?

If it is Visual Studio and Windows, use atoi() and itoa().

answered Jun 13 '13 at 22:30

user1343318

3 Answers3