windows-nt/Source/XPSP1/NT/base/crts/crtw32/string/strcat.c
2020-09-26 16:20:57 +08:00

98 lines
2.2 KiB
C

/***
*strcat.c - contains strcat() and strcpy()
*
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Strcpy() copies one string onto another.
*
* Strcat() concatenates (appends) a copy of the source string to the
* end of the destination string, returning the destination string.
*
*Revision History:
* 05-31-89 JCR C version created.
* 02-27-90 GJF Fixed calling type, #include <cruntime.h>, fixed
* copyright.
* 10-01-90 GJF New-style function declarator.
* 04-01-91 SRW Add #pragma function for i386 _WIN32_ and _CRUISER_
* builds
* 04-05-91 GJF Speed up strcat() a bit (got rid of call to strcpy()).
* 09-01-93 GJF Replaced _CALLTYPE1 with __cdecl.
* 12-03-93 GJF Turn on #pragma function for all MS front-ends (esp.,
* Alpha compiler).
* 12-30-94 JCF Turn off #pragma function for MAC.
* 02-30-95 JCF Add _MBSCAT check.
*
*******************************************************************************/
#include <cruntime.h>
#include <string.h>
#ifndef _MBSCAT
#ifdef _MSC_VER
#pragma function(strcat,strcpy)
#endif
#endif
/***
*char *strcat(dst, src) - concatenate (append) one string to another
*
*Purpose:
* Concatenates src onto the end of dest. Assumes enough
* space in dest.
*
*Entry:
* char *dst - string to which "src" is to be appended
* const char *src - string to be appended to the end of "dst"
*
*Exit:
* The address of "dst"
*
*Exceptions:
*
*******************************************************************************/
char * __cdecl strcat (
char * dst,
const char * src
)
{
char * cp = dst;
while( *cp )
cp++; /* find end of dst */
while( *cp++ = *src++ ) ; /* Copy src to end of dst */
return( dst ); /* return dst */
}
/***
*char *strcpy(dst, src) - copy one string over another
*
*Purpose:
* Copies the string src into the spot specified by
* dest; assumes enough room.
*
*Entry:
* char * dst - string over which "src" is to be copied
* const char * src - string to be copied over "dst"
*
*Exit:
* The address of "dst"
*
*Exceptions:
*******************************************************************************/
char * __cdecl strcpy(char * dst, const char * src)
{
char * cp = dst;
while( *cp++ = *src++ )
; /* Copy src over dst */
return( dst );
}