Oxdeadbeef questions

• why struct option array needs an addtional dummy entry when using getopt_long
• how does cpu calculate 20-bit address in real mode
• const string plus boolean to pluralize in C
• Class template with both pointer type and regular type
• Operand size prefix in 16-bit mode
• Is it possible to rewrite modulo (2^n - 1) using bitwise and restricted operators
• One element array in struct
• Old style C function declaration

Oxdeadbeef answers