dev-cpp-users

[Dev-C++] need help on converting a phone number

[Mitchell, T. (HNA) <Tam...@hj...>]

The program should convert the area code to an int using atoi
convert the phone number to a long using atol.  It does not work correctly.
Any suggestions?

Thanks

/* Tamra Mitchell
Phone Number  program */

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

int main()
{
      char phoneNumber[15];
      char *codePtr, *threePtr, *fourPtr, *local;
      int areacode, i;
      long number;

      printf("Enter phone number in following format (555) 555-5555 \n");
      gets(phoneNumber);

      codePtr = strtok(phoneNumber, " ");
      threePtr = strtok(NULL, "-");
      fourPtr = strtok(NULL, "\0");

      for(i=0; i < strlen(codePtr); i++)
          {
          if(codePtr[i] == '(')
          codePtr[i] = ' ';
           {
           if(codePtr[i] == ')')
           codePtr[i] = ' ';
           }
          }
      printf("\nArea Code: ", codePtr);
      printf("Local Exchange: ", threePtr);
      printf("Local Number: ", fourPtr);

      local=strcat(threePtr, fourPtr);
      areacode=atoi(codePtr);
      number=atol(local);

      system("PAUSE");
      return 0;
}


Tamra Y. Mitchell
Heinz North America
Operating Systems  Analyst
(412) 237-5232  Work
(412) 996-9078  Cell Phone

[Dev-C++] need help on converting a phone number

[Alan T. <ala...@3n...>]

    Are you just in C or C++?  strtok is a terrible function, because it
destroys the original string by placing a NULL character at the location of
the delimiter.  So, if you use it, you should copy the original string into
a temporary one.  See http://www.gator.net/~garyg/C/FUNCTIONS/strtok.html
for info on the function.

            If you can use C++, there are some nice string operations (find,
substr, etc.) to do things like this easily.  You could read it in as a
string, find a delimiting character (or string or from a set of characters)
and extract a substring, without messing up the original string.  This is a
much cleaner implementation.  See
http://www.icce.rug.nl/docs/cplusplus/cplusplus.html for a tutorial on these
string operations -- find the string section.

Alan