INTERVIEW QUESTIONS C VARIABLES IN C DETAILS

Question: Where does global, static, local, register variables, free memory and C Program instructions get stored?

Answer: local variables-->stack
global variable-->data memory
register variable-->register
static variable-->main memory

local variables-->stack
global variable-->data memory
register variable-->register
static variable-->main memory Source: CoolInterview.com

Local/auto variables, which is declared in stack area of memory

A variable prefixed with register will be stored in registers. when creation of variables exceeds the availability of registers then the remaining register variable will be stored in stack area.

Global variables stored in uninitialised data segment
static variables stored in initialised data segment.

free memory(dynamic memory allocatios) will be stored in heap memory(i.e in data segments).

program instrutions will be stored in text segment which will be called ROM(Read only memory).

const variables also stores in text segments Source: CoolInterview.com

local variables-->stack
initialized global variable-->data memory ( .data segment in gcc )
initlaized static variable --> data memory

uninitialized global variable-->data memory ( .BSS( Bolck start by Symbol) segment in gcc )
uninitlaized static variable --> data memory
register variable-->register
Source: CoolInterview.com

local-stack
global & static -> data segment
register->cpu register
dynamically allocated->heap Source: CoolInterview.com

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