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

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 开发者_开发技巧parameter?)

Thank You.

There is snprintf, which also takes a size parameter:

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

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

Most compilers have an snprintf() function.

You want snprintf().

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