processor

How the size of int is decided? Is it true that the size of int will depend on the processor. For 32-bit machine, it will be 32 bits and for 16-bit it's 16. On my machine it's showing as 32 bits, although the machine has 64-bit processor and 64-bit Ubuntu installed. It depends on the implementation. The only thing the C standard guarantees is that sizeof(char) == 1 and sizeof(char) <= sizeof(short) <= sizeof(int) <= sizeof(long) <= sizeof(long long) and also some representable minimum values for the types, which imply that char is at least 8 bits long, int is at least 16 bit, etc. So it must

Pardon me if you feel this has been answered numerous times, but I need answers to the following queries! Why data has to be aligned (on 2-byte / 4-byte / 8-byte boundaries)? Here my doubt is when the CPU has address lines Ax Ax-1 Ax-2 ... A2 A1 A0 then it is quite possible to address the memory locations sequentially. So why there is the need to align the data at specific boundaries? How to find the alignment requirements when I am compiling my code and generating the executable? If for e.g the data alignment is 4-byte boundary, does that mean each consecutive byte is located at modulo 4

How do I determine the word size of my CPU? If I understand correct an int should be one word right? I'm not sure if I am correct. So should just printing sizeof(int) would be enough to determine the word size of my processor? Your assumption about sizeof(int) is untrue; see this . Since you must know the processor, OS and compiler at compilation time, the word size can be inferred using predefined architecture/OS/compiler macros provided by the compiler. However while on simpler and most RISC processors, word size, bus width, register size and memory organisation are often consistently one

Using Python is there any way to find out the processor information... (I need the name) I need the name of the processor that the interpreter is running on. I checked the sys module but it has no such function. I can use an external library also if required. The platform.processor() function returns the processor name as a string. >>> import platform >>> platform.processor() 'Intel64 Family 6 Model 23 Stepping 6, GenuineIntel' Here's a hackish bit of code that should consistently find the name of the processor on the three platforms that I have any reasonable experience. import os, platform,