1. The second argument that you pass to scanf in rsi determines where the information read from the keyboard goes. Explain why, in the code below, to read in a string you use 'mov' and to read an int you use 'lea'.

 ;; read in a string mov rdi, dword str_fmt mov rsi, dword buffer call scanf ;; read in an integer mov rdi, dword num_fmt lea rsi, [rbp-8] call scanf