float to char*

[Luca]

Hi all, there's a way to convert a float to a char*? I have to do this:

char* str = "Object Pos: ";
char* str1 = //convert my float value to char*;
char* s = strcat(str, str1);
DrawText(x, y, s);

[John Harrison]

"Luca" <lu***@katamail.com> wrote in message
news:p%*********************@news4.tin.it...

Hi all, there's a way to convert a float to a char*? I have to do this:

char* str = "Object Pos: ";
char* str1 = //convert my float value to char*;
char* s = strcat(str, str1);
DrawText(x, y, s);

Simple way is to use a char array (not char*) and sprintf

char str[222];
sprintf(str, "Object Pos: %g", floatValue);
DrawText(x, y, str);

Of course it is VITAL that your array is big enough. And for this reason it
really better to do things that safer way and use std::string and
std::ostringstream.

#include <string>
#include <sstream>

std::ostreamstream str;
str << "Object Pos: " << floatValue;
DrawText(x, y, str.str().c_str());

john

[Luca]

Thanks a lot.

Luca.
"John Harrison" <jo*************@hotmail.com> ha scritto nel messaggio
news:2u*************@uni-berlin.de...

"Luca" <lu***@katamail.com> wrote in message
news:p%*********************@news4.tin.it...

Hi all, there's a way to convert a float to a char*? I have to do this:

char* str = "Object Pos: ";
char* str1 = //convert my float value to char*;
char* s = strcat(str, str1);
DrawText(x, y, s);

Simple way is to use a char array (not char*) and sprintf

char str[222];
sprintf(str, "Object Pos: %g", floatValue);
DrawText(x, y, str);

Of course it is VITAL that your array is big enough. And for this reason
it
really better to do things that safer way and use std::string and
std::ostringstream.

#include <string>
#include <sstream>

std::ostreamstream str;
str << "Object Pos: " << floatValue;
DrawText(x, y, str.str().c_str());

john

[Howard]

"John Harrison" <jo*************@hotmail.com> wrote in message
news:2u*************@uni-berlin.de...

"Luca" <lu***@katamail.com> wrote in message
news:p%*********************@news4.tin.it...

Hi all, there's a way to convert a float to a char*? I have to do this:

char* str = "Object Pos: ";
char* str1 = //convert my float value to char*;
char* s = strcat(str, str1);
DrawText(x, y, s);

Simple way is to use a char array (not char*) and sprintf

char str[222];
sprintf(str, "Object Pos: %g", floatValue);
DrawText(x, y, str);

Of course it is VITAL that your array is big enough. And for this reason
it
really better to do things that safer way and use std::string and
std::ostringstream.

#include <string>
#include <sstream>

std::ostreamstream str;

you mean...

std::ostringstream str;

? (or was it ostrstream, I forget)
str << "Object Pos: " << floatValue;
DrawText(x, y, str.str().c_str());

john

[John Harrison]

"Howard" <al*****@hotmail.com> wrote in message
news:O1******************@bgtnsc05-news.ops.worldnet.att.net...

"John Harrison" <jo*************@hotmail.com> wrote in message
news:2u*************@uni-berlin.de...

"Luca" <lu***@katamail.com> wrote in message
news:p%*********************@news4.tin.it...

Hi all, there's a way to convert a float to a char*? I have to do this:

char* str = "Object Pos: ";
char* str1 = //convert my float value to char*;
char* s = strcat(str, str1);
DrawText(x, y, s);

Simple way is to use a char array (not char*) and sprintf

char str[222];
sprintf(str, "Object Pos: %g", floatValue);
DrawText(x, y, str);

Of course it is VITAL that your array is big enough. And for this reason
it
really better to do things that safer way and use std::string and
std::ostringstream.

#include <string>
#include <sstream>

std::ostreamstream str;

you mean...

std::ostringstream str;

Yes, thanks for the correction.

john