#include <string.h> char * __stpcpy(char *dest, const char *src);
The __stpcpy() function copies the string pointed to by src (including the terminating /0 character) to the array pointed to by dest. The strings may not overlap, and the destination string dest must be large enough to receive the copy.
__stpcpy() returns a pointer to the end of the string dest (that is, the address of the terminating null character) rather than the beginning.
__stpcpy() has the same specification as stpcpy().
__stpcpy is not in the source standard; it is only in the binary standard.