Instructions on using snprintf in vs2010

# Include <stdio. h>
# Include <stdlib. h>
Void F (const char * P)
{
Char Buf [4] = {};
_ Snprintf (BUF, sizeof (BUF), "% 6 s", P );
Printf ("% C", Buf );
Printf ("% 2 s", Buf );
}
Int main ()
{
Char s [4] = {"123 "};
F (s );
Getchar ();

}

Check the code first. What is the output?

First, in vs2010 (this version is used only, and others are unclear), snprintf cannot find the defined version, and add _ snprintf.

Snprinf is written from the back end. That is to say, if the number of characters to be written is greater than the number of accepted characters, it is written from the back to the back.