dev-cpp-users

[Dev-C++] convert 'int' to 'char'/'str'

[Guillermo G. <ggu...@ma...>]

Is there an easy to convert a numeric value (int, double, etc...) into a =
char or string?
something that would work similar to Delphi's 'IntToStr()' function?

Guillermo Gutierrez
Market Scan Information Systems
Software Q.A. Supervisor
(818) 575-2000 x2427
ggu...@ma...

Re: [Dev-C++] convert 'int' to 'char'/'str'

[Cary H. <xen...@gm...>]

itoa() look in stdlib.h


On Fri, 12 Nov 2004 07:54:11 -0800, Guillermo Gutierrez
<ggu...@ma...> wrote:
>  
> 
> Is there an easy to convert a numeric value (int, double, etc...) into a
> char or string? 
> something that would work similar to Delphi's 'IntToStr()' function? 
> 
> Guillermo Gutierrez 
> Market Scan Information Systems 
> Software Q.A. Supervisor 
> (818) 575-2000 x2427 
> ggu...@ma...

Re: [Dev-C++] convert 'int' to 'char'/'str'

[Per W. <pw...@ia...>]

Note that itoa() isn't defined in ANSI-C, so it isn't always available.

Same with ecvt(), fcvt(), gcvt() for floating point numbers.

In most situations, sprintf() is a really excellent alternative. Since the
numbers have limited digit count, there shouldn't be a problem with buffer
overflow.

/Per W

On Fri, 12 Nov 2004, Cary Haynie wrote:

> itoa() look in stdlib.h
>
>
> On Fri, 12 Nov 2004 07:54:11 -0800, Guillermo Gutierrez
> <ggu...@ma...> wrote:
> >
> >
> > Is there an easy to convert a numeric value (int, double, etc...) into a
> > char or string?
> > something that would work similar to Delphi's 'IntToStr()' function?
> >
> > Guillermo Gutierrez
> > Market Scan Information Systems
> > Software Q.A. Supervisor
> > (818) 575-2000 x2427
> > ggu...@ma...
>
>
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Re: [Dev-C++] convert 'int' to 'char'/'str'

[Per W. <pw...@ia...>]

Most common methods:

int my_int = 10;
double my_double = 1.15;

// Original C code
char buf[100];
sprintf(buf,"%u %g",my_int,my_double);

// Old C++ code (deprecated)
#include <strstream>
ostrstream s; // deprecated
s << my_int << " " << my_double;
string str = s.str();

// New C++ code
#include <sstream>
std::ostringstream s;
s << my_int << " " << my_double;
std::string str = s.str();

/Per W

On Fri, 12 Nov 2004, Guillermo Gutierrez wrote:

> Is there an easy to convert a numeric value (int, double, etc...) into a char or string?
> something that would work similar to Delphi's 'IntToStr()' function?
>
> Guillermo Gutierrez
> Market Scan Information Systems
> Software Q.A. Supervisor
> (818) 575-2000 x2427
> ggu...@ma...
>
>

Re: [Dev-C++] convert 'int' to 'char'/'str'

[<ms...@wp...>]

Dnia 2004-11-12 17:26, Użytkownik Per Westermark napisał:
(...)
> #include <sstream>
> std::ostringstream s;
> s << my_int << " " << my_double;
> std::string str = s.str();

This is (for me) the most in C++ style. For better similar to IntToStr()
from Delphi it can (?) be written as:

#include <sstream>
std::string itos(int i)
{
  std::stringstream s;
  s << i;
  return s.str();
}

(Example found via google).

Regards
Marcin