[Zimwy]

Hey,
I was wondering if anyone could help me turning a double, float, or int, into a char* string? Thanks!!

Gabe

[type_r503]

Code:
 char* str(const char* fmt, ...)
 {
  char msg[1024];
 
  va_list args;
 
  va_start(args, fmt);
  vsprintf(msg, fmt, args);
  va_end(args);


  return msg;
 }

[00101001]

easier still:

char mystring[1024];
float mynum = 10;

sprintf(mystring, "%f", mynum); //throws mynum into mystring

[Zimwy]

Cool! Thanks,
Where can I find out what the heck sprintf() does? It's nice that it works, but I'd like to be able to at least pretend I know what's going on. Thanks again!!

Gabe

[type_r503]

In the terminal type "man sprintf"

type R

[yeslekmc]

Originally posted by Zimwy:
Cool! Thanks,
Where can I find out what the heck sprintf() does? It's nice that it works, but I'd like to be able to at least pretend I know what's going on. Thanks again!!

Gabe

sprintf() works just like printf() and fprintf()...

printf() sends an output string to the screen (usually stdout).

fprintf() works just like printf() but instead of sending an output string to the screen it sends it to a file.

sprintf() also works just like printf(), but in this case it sends the output string to a different string.

Grab any beginning C programming book and it will explain it all clearly. If you are not familiar with the C programming language then I suggest you don't look in the man page for sprintf() for it will most likely confuse the geebers out of you.

Thanks!

[smeger]

Just for fun, here's another way. This is a fairly "heavy" method, but it has the advantage of being heavily customizable.

Code:
#include <sstream>
#include <iomanip>

void MyConvertDouble
(const double& myDouble) {

     char *finalString;
     std::stringstream tempStream;
     float outputFloat;

     tempStream << myDouble;

     // get a 'c-string' version of our string-stream
     finalString = tempStream.str();
     std::cout << finalString << std::endl;

     // output our string-stream back to a float
     tempStream >> noskipws >> outputFloat;
     if (! tempStream) {
          // there was an error
     }
}