strnins(3)
insert prefix of a string at the beginning of another string
SYNOPSIS
#include <publib.h>
char *strnins(char *tgt, const char *src, size_t n);
DESCRIPTION
strins inserts upto n characters from the beginning of
the src string at the beginning of the tgt string.
The strings must not overlap.
The target string must contain enough memory to hold both strings.
RETURN VALUE
strnins returns its first argument.
EXAMPLE
See the manual page for
strdel(3) for an example.