Append a string.
char *strcat( char *strDestination, const char *strSource );
wchar_t *wcscat( wchar_t *strDestination, const wchar_t *strSource );
unsigned char *_mbscat( unsigned char *strDestination, const unsigned char *strSource );
Routine | Required Header | Compatibility |
strcat | <string.h> | ANSI, Win 95, Win NT |
wcscat | <string.h> or <wchar.h> | ANSI, Win 95, Win NT |
_mbscat | <mbstring.h> | Win 95, Win NT |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
LIBC.LIB | Single thread static library, retail version |
LIBCMT.LIB | Multithread static library, retail version |
MSVCRT.LIB | Import library for MSVCRT.DLL, retail version |
Return Value
Each of these functions returns the destination string (strDestination). No return value is reserved to indicate an error.
Parameters
strDestination
Null-terminated destination string
strSource
Null-terminated source string
Remarks
The strcat function appends strSource to strDestination and terminates the resulting string with a null character. The initial character of strSource overwrites the terminating null character of strDestination. No overflow checking is performed when strings are copied or appended. The behavior of strcat is undefined if the source and destination strings overlap.
wcscat and _mbscat are wide-character and multibyte-character versions of strcat. The arguments and return value of wcscat are wide-character strings; those of _mbscat are multibyte-character strings. These three functions behave identically otherwise.
Generic-Text Routine Mappings
TCHAR.H Routine | _UNICODE & _MBCS Not Defined | _MBCS Defined | _UNICODE Defined |
_tcscat | strcat | _mbscat | wcscat |
Example
/* STRCPY.C: This program uses strcpy
* and strcat to build a phrase.
*/
#include <string.h>
#include <stdio.h>
void main( void )
{
char string[80];
strcpy( string, "Hello world from " );
strcat( string, "strcpy " );
strcat( string, "and " );
strcat( string, "strcat!" );
printf( "String = %s\n", string );
}
Output
String = Hello world from strcpy and strcat!
See Also strncat, strncmp, strncpy, _strnicmp, strrchr, strspn