10 Jo P Oct 07

The document discusses how local variables are allocated in the stack and how compilers handle it. It explains that local variables are stored in the stack frame of a function. When the main function is called, space for the local variable i is allocated in the stack. The compiler generates code to initialize i to 10 by loading 10 into a register and storing it in i's location. When printf is called, it expects an integer argument following the format specifier "%d", and it reads this argument from a register. Most compilers reuse registers, so it's possible that printf reads from the same register used to initialize i, resulting in 10 being printed instead of garbage. The document also demonstrates how local variables may be allocated contiguously in the stack through