String to float and float to string?

[rastkocvetkovic]

My script looks like simply this:

char string[100], *pointerToString;
pointerToString = string;
string = "124.35";
float myFloat;
myFloat = atof(string);

That doesn't work, I don't know why. I have tried to include all the libraries I could imagine, and still nothing. What could be the problem?

And now, vice versa:

I want to output a float to a file, therefore float should be transformed to string. How could I do that?

I'll be very glad of any help. Thanks!

 

[Jonsauce]

Im not 100% sure about this, but:
I looked up atof in MSN Library and it looks like it can only change strings to doubles:

double atof( const char *string );

There was NOT a
float atof( const char *string);

So I assume that you will need to use a double instead of a float, OR write your own function

As far as converting a string to a float / double: I have no idea. I never had heard of atof before last week since I am a new programmer. Hopefully someone else can help you out w/ this one.

 

[quagsire]

Do not use string = "124.35". Use strcpy(string, "124.35&quot. For char[] and char* you have to use strcpy, strncpy, memcpy or memmove. That should solve your problem.

To convert float to char[] use sprintf :
sprintf(string, "%f", 124.34);