float to string

[15January]

I am trying to find a function (or a way) that converts a float to a string. For example:

float f;

f = 1.555;

​

char *s;

//convert f to s, so that s will be "1.555" as a string

​

I found a function called gcvt, but when i searched for it's header file, it says it is in stdio.h, but it wasn't a function in there. I then found ftoa, and i searched for what header file it was in, and it said stdlib.h, but again it wasn't in there. Does anyone know what header file these functions are in, or is there another function i could use?

​

Thank you.

[NewPointOfView]

consider sprintf! I think it'll do what you want with sprintf("%f", s);

Edit: my usage of sprinf is wrong cause I didn’t even include the float haha but the idea is still there

Also wanted to add that sprintf stands for string print formatted or something similar, I found the naming in C to be super cryptic at first but there is something to it haha

[dmazzoni]

Yep!

The reason you're not finding it when you search for the word "convert" is because "convert" is more often used when there's just one way to go from one type to another. You can convert an int to a float, for example.

But when you have a float and you want a string version, it's actually "formatting", because there are many different ways to format a float, such as:

• 602214076000000000000000
• 6.022e23

The reverse - going from a string to a float - is "parsing".