@node strcat, string
@findex strcat
@subheading Syntax

@example
#include <string.h>

char *strcat(char *s1, const char *s2);
@end example

@subheading Description

This function concatenates @var{s2} to the end of @var{s1}.

@subheading Return Value

@var{s1}

@subheading Portability

@portability ansi, posix

@subheading Example

@example
char buf[100] = "hello";
strcat(buf, " there");
@end example