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Changing String To Integer and Integer to String

Posted on 2003-11-19
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12,580 Views
Last Modified: 2013-11-20
How can i Change Integer to String and String to Integer by using this function?

int strtoint(char ch);
char inttostr(int no);

anybody can help me with this? what should i use for the "Include" header?
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Question by:girlswants_me
  • 5
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14 Comments
 

Author Comment

by:girlswants_me
ID: 9776944
anybody?
0
 
LVL 23

Expert Comment

by:Roshan Davis
ID: 9776984
string to integer
============

int nVal = atoi(szSTR);


integer to string
============

char szSTR[10];
itoa(nVal, szSTR, 10);

Rosh :)
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Author Comment

by:girlswants_me
ID: 9777005
can you give me a complete function for that please.
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Expert Comment

by:Roshan Davis
ID: 9777007
#include "Shlwapi.h"

Project Menu->Settings
Link Tab->

Object/Library Modules ->

"Shlwapi.lib"   <-----Add this in that edit box
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LVL 23

Expert Comment

by:Roshan Davis
ID: 9777031
Now u can Use the functions StrToInt, IntToStr
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LVL 23

Expert Comment

by:Roshan Davis
ID: 9777035
oops IntToStr  is not in that lib.
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Author Comment

by:girlswants_me
ID: 9777164
Sorry i cannot give you points. Can you create a function by using what is stipulated above?
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LVL 23

Expert Comment

by:Roshan Davis
ID: 9777196
#include <stdlib.h>


int strtoint(char* pch)
{
       return itoa(pch);
}


char* inttostr(int no, char* pch)
{
      return itoa(no, pch, 10);
}

Is that what you want...?
Rosh :)
Rosh :)
0
 

Expert Comment

by:merlic
ID: 9785377
#include <stdlib.h>


int strtoint(char* pch)
{
       return atoi(pch);   // atoi function, not itoa!!
}


char* inttostr(int no, char* pch)
{
      return itoa(no, pch, 10);
}
0
 

Expert Comment

by:merlic
ID: 9785434
//----------------- include ---------------------------------------

#include <stdlib.h>

//----------------- declarations ---------------------------------

int strtoint(char* pch);
char* inttostr(int no, char* pch);

//----------------- definitions -----------------------------------

int strtoint(char* pch)
{
       return atoi(pch);   // atoi function, not itoa!!
}


char* inttostr(int no, char* pch)
{
      return itoa(no, pch, 10);
}

hi,
merlic
0
 

Accepted Solution

by:
merlic earned 35 total points
ID: 9785496
try this if you need only one parameter passed to the functions

//----------------- include ---------------------------------------

#include <stdlib.h>

//----------------- declarations ---------------------------------

int strtoint(char* pch);
char* inttostr(int no); //only the int parameter

//----------------- definitions -----------------------------------

int strtoint(char* pch)
{
       return atoi(pch);   // atoi function, not itoa!!
}


char* inttostr(int no) // only the int parameter
{
      char pch[10] = "";
      return itoa(no, pch, 10);
}

hi,
merlic
0
 

Author Comment

by:girlswants_me
ID: 9793399
thats more like it. Thank you very much merlic.
0
 

Expert Comment

by:merlic
ID: 9795267
nice to help you!
bye
0
 
LVL 4

Expert Comment

by:jtwine100697
ID: 11171711
Why is this in the "time tested" solutions?  For most systems out there, it is technically incorrect:

1: a 32-bit "int" value, when converted to a string can occupy 10 character places; so a buffer of only 10 chars is incorrect: there is no room allocated for the terminating NUL (not NULL) character.

2: The accepted answer basically returns the address of a non-static local variable, which is incorrect.  It might seem to work, but that does not mean it is correct.

Peace!

-=- James.
0

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