Modern C++ : 01. Memory Structure - Variables in Memory

#include <iostream>

int main() {
	int a = 0;
	int b = 3;
	int c = a + b;
	double d = 2.5;

	std::cout << "a:" << (long)&a << std::endl;
	std::cout << "b:" << (long)&b << std::endl;
	std::cout << "c:" << (long)&c << std::endl;
	std::cout << "d:" << (long)&d << std::endl;

	return 0;
}

<Run in Linux(Ubuntu) - g++>

<Run in Linux(Ubuntu) - clang++>

 

 

<Run in Windows - MSVC>

d (address : 649066472)

c (address : 649066436)

b (address : 649066404)

a (address : 649066372)

<Stack> 공간에서 메모리의 암시적인 형식

			d 6472	d Area	d Area	d Area	d Area	d Area	d Area
d Area	d Area	d Area	d Area	d Area	d Area	d Area	d Area	d Area	c 6436
c Area	c Area	c Area	c Area	c Area	c Area	c Area	c Area	c Area	c Area
c Area	b 6404	b Area	b Area	b Area	b Area	b Area	b Area	b Area	b Area
b Area	b Area	b Area	a 6372	a Area	a Area	a Area	a Area	a Area	a Area
a Area	a Area	a Area	a Area	a Area

위 코드로 나온 형식을 참조로 그려본 메모리 명시적 할당 형식

0 (0xFFFF)

3

a +b

2.5

↓

아래로 쌓여가는 방식이다.

 

출처

https://youtu.be/cTcfCG1s4KI