Splite string into varaibles.

you need to define your parsing rules and write the appropriate code.  Scan the string char by char and every time you hit a "type" boundary (which you define) start saving into a new array element.  Types could be

1) pure numeric
2) pure alpha
3) everything else

or it could be more elaborate.  Your question is too vague to give anything more than a generic answer as I have done.

Thank you, in fact my object to convert a string (maths formula) into 3 variables. For example, 32+6 into 32, 6, and "+". How can I save them into 2 integer and 1 string by using "type"??

Oh, and one more line at the end of the while:

    set lasttype to type of "current" character

2 superleo
int atoi( const char *string );  ??
>...by using "type"??
what do you mean?

say you want to convert the string "32+6" (assuming no spaces before and after the plus sign). Suppose this string is stored in a variable strFormula

char oper[2];
int v1,v2;
char *strFormula="32+6";
sscanf(strFormula,"%d%c%d",&v1,&oper[0],&v2);
oper[1]=0;
printf("%d%s%d\n",v1,oper,v2);

assuming that your string has a lot of variations, like
  32+2
  32+ 2
  32 +2
  32 + 2
  32 +(2)
  ets.
I suggest to use either regexec() and regcomp(), or to implement the parser with (f)lex.

Use strtok()

Here is a function that will split a string into separate variables (char **) and return the number of entries.


#include <stdio.h>
#include <string.h>
#include <split.h>

int     split(char * pstrSource, char ** pstrDest,     char * pstrSeps)
{
     auto       int            intNumTokens=0;
     auto       char     *     pstrToken=NULL;
     static     char     *     pstrDefaultSeps="\t,; ";
     static     char     *     pstrSepsToUse=NULL;
     if (!pstrSource || !pstrDest)
          {
          return 0;
          }

     pstrSepsToUse=pstrSeps;
     if (!pstrSepsToUse)
          {
          pstrSepsToUse=pstrDefaultSeps;
          }

     pstrToken = strtok( pstrSource, pstrSepsToUse );
     while( pstrToken != NULL )
          {
          pstrDest[intNumTokens]=pstrToken;
          intNumTokens++;
     pstrToken = strtok( NULL, pstrSepsToUse );
          }

     return     intNumTokens;
}

try, please:
http://codeguru.earthweb.com/cpp_mfc/express.shtml
http://codeguru.earthweb.com/cpp_mfc/tokenizer.shtml

use this but split on space

#include <string.h>
#include <stdio.h>
#include <stdlib.h>

char string[] = "MyXStringXThatXIXWillXSplit";

char **split_text(char *string,char *token, int *count)
{
     char **retval = NULL;
     char *ptr = NULL;
     *count = 0;
     ptr = strtok(string,token);
       while(ptr != NULL)
    {
         *count = *count + 1;
            retval = (char**)realloc(retval,(*count * sizeof(char*)));
            retval[*count - 1] = strdup(ptr);
          ptr = strtok(NULL,token);
     }
     return retval;
}

void main( void )
{
     int count = 0;
     char **tokens = split_text(string,"X",&count);
     for(int i=0;i<count;i++)
     {
          printf("%i ] %s\n",i,tokens[i]);
     }
}

the disadvantage of strtok is that you do not get the matched (tokenized) character, it's just replaced by \0
Not a problem as long as you just have "+" ;-)