How to create a function to covert float type to string in C

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1.00/5 (1 vote)

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C#

float t=5467453265.457;
int i,d;
i=(int)t;
//itos();
t=t-(int)t;
t*=1000000;
//precision
d=t;
//itos()

What I have tried:

i have tried to read its integer part n decimal part separately but code don't work if int part is greater than range of int

Posted 24-Mar-16 4:55am

Ravinder Singh

Updated 24-Mar-16 7:09am

King Fisher

v2

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jeron1 24-Mar-16 11:04am

Do you need to create a function or can you use an existing one like sprintf()?

link to an sprintf() reference.
http://www.tutorialspoint.com/c_standard_library/c_function_sprintf.htm

Ravinder Singh 24-Mar-16 11:06am

i need to create

jeron1 24-Mar-16 11:18am

Try here, I've not tried it myself.
http://www.geeksforgeeks.org/convert-floating-point-number-string/

Richard MacCutchan 24-Mar-16 12:58pm

Why not just use (s)printf(_s)?

Ravinder Singh 26-Mar-16 2:41am

because at a point it do system call which i am trying to avoid

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Matt T Heffron · Answer 1 · 2016-03-24T06:51:00

Solution 1

Check out: Printing Floating-Point Numbers Quickly and Accurately[^] by my friend Robert Burger

Posted 24-Mar-16 6:51am

Matt T Heffron

Comments

Ravinder Singh 26-Mar-16 7:57am

can u plz provide a link for algorithm or program rather than whole theory

Matt T Heffron 28-Mar-16 14:00pm

Nope.
I'd have to Google it and you can do that as well and can decide which result makes the most sense to you.
I suggest searching:
convert float to string algorithm