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/*

-- CXB30131.C

--

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making

--     this public release, the Government intends to confer upon all

--     recipients unlimited rights  equal to those held by the Government.

--     These rights include rights to use, duplicate, release or disclose the

--     released technical data and computer software in whole or in part, in

--     any manner and for any purpose whatsoever, and to have or permit others

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

--

-- FUNCTION NAME: CXB30131   ("combine_two_strings")

--

-- FUNCTION DESCRIPTION:

--      This C function returns a pointer to the combination of two

--      input strings.

--

-- INPUTS:

--      This function requires that two parameters be passed to it.

--      The type of both of these parameters are pointer to char (which

--      is used to reference an array of chars).

--

-- PROCESSING:

--      The function will create a char array that is equal to the combined

--      length of the char arrays referenced by the two input parameters.

--      The char elements contained in the char arrays specified by the

--      parameters will be combined (in order) into this new char array.

--

-- OUTPUTS:

--      The newly created char array will be returned as the function

--      result through the function name.  The char arrays referenced by the

--      two parameters will be unaffected.

--

-- CHANGE HISTORY:

--      12 Oct 95   SAIC    Initial prerelease version.

--      26 Oct 96   SAIC    Modified temp array initialization.

--      15 Feb 99   RLB     Repaired to remove non-standard function strdup.

--!

*/

#include <string.h>

#include <stdlib.h>

char *stringdup (char *s)

{

  char *result = malloc(sizeof(char)*(strlen(s)+1));

  return strcpy(result,s);

}

char *CXB30131 (char *string1, char *string2)

/* NOTE: The above function definition should be accepted by an ANSI-C    */

/*       compiler.  Older C compilers may reject it; they may, however    */

/*       accept the following three lines.  An implementation may comment */

/*       out the above function definition and uncomment the following    */

/*       one.  Otherwise, an implementation must provide the necessary    */

/*       modifications to this C code to satisfy the function             */

/*       requirements (see Function Description).                         */

/*                                                                        */

/*   char *CXB30131 (string1, string2)                                    */

/*      char *string1;                                                    */

/*      char *string2;                                                    */

{

   char temp[100];  /* Local array that holds the combined strings */

   int  index;      /* Loop counter */

   int  length = 0; /* Variable that holds the length of the strings */

   /* Initialize the local array */

   for (index = 0; index < 100; index++)

   { temp[index] = 0; }

   /* Use the library function strcpy to copy the contents of string1

      into temp.  */

   strcpy (temp, string1);

   /* Use the library function strlen to determine the number of

      characters in the temp array (without the trailing nul). */

   length = strlen (temp);

   /* Add each character in string2 into the temp array, add nul

      to the end of the array. */

   for (index = length; *string2 != '\0'; index++)

   { temp[index] = *string2++; }

   temp[index] = '\0';

   /* Use the library function strdup to return a pointer to temp. */

   return (stringdup(temp));

}