Char array to a float?

Is there a function in any of the standard libraries that does this, or do I have ot create my own?

You mean take a null terminated array of characters that contains the textual representation of a floating point number and return said floating point number?

The function is atof() //(ascii to float)

It takes a pointer to the array of char and returns a double precision floating pooint value.

It is found in <cstdlib>.

Yep, that's what I needed, thanks.

strtod() would be better choice.

So... what's the second paramiter of strtod() supposed to be?

Quote:

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Originally posted by Nippashish
So... what's the second paramiter of strtod() supposed to be?

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Did you look it up?

What am I saying! This is a C++ board, use a stringstream.
Although if you still want info on strtod() go here: http://www.opengroup.org/onlinepubs/...sh/strtod.html

An example of a stringstream converting a char * to a float:

Code:

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#include <iostream>
#include <sstream>
using namespace std;

int main ()
{
        float val;
        stringstream ss (stringstream::in | stringstream::out);
       
        ss << "1.2";
       
        ss >> val;
        cout << val*2 << endl;
       
        return 0;
}

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What part of Nova Scotia do ye hail from?

Was thinking the same thing, Elbro.

Why are you using a nul terminated array of char anyway, nippa? Strings are almost always better.

I never really used strings before so it just never occured to me, I'm using them now though, and it's making my life a hell of a lot easier :D.

And I'm from the Bridgewater area.