Function equivalent to sprintf() with maximum number of characters to be copied?

Question

function(char* name)
{       
   char sql[50];
   sprintf(sql, "select %s;", name);
}

What's the best way to make sure only 50 chars of name are copied to sql in the case name is larger than what sql can hold? (sprintf with a N parameter?)

Thank You.

Answer 1

snprintf, although it does not null terminate if you print N characters.

Answer 2

There is snprintf, which also takes a size parameter:

int snprintf(char *str, size_t size, const char *format, ...);

Answer 3

Most compilers have an snprintf() function.

Answer 4

You want snprintf().

int snprintf(char *str, size_t size, const char *format, ...);