[C++] 자료형 크기

64bit 환경에서 데이터 자료형의 크기와 범위이다.

	자료형	크기	범위
논리형	bool	1 byte (8 bit)	0 ~ 1
void	void	-	-
null pointer	decltype (nullptr)	-	-
문자형	(signed) char	1 byte (8 bit)	-128 ~ 127
	unsigned char	1 byte (8 bit)	0 ~ 255
정수형	(signed) short (int)	2 byte (16 bit)	-32,768 ~ 32,767
	unsigned short (int)	2 byte (16 bit)	0 ~ 65,535
	(signed) int	4 byte (32 bit)	-2,147,483,648 ~ 2,147,483,647
	unsigned int	4 byte (32 bit)	0 ~ 4,294,967,295
	(signed) long (int)	8 byte (64 bit)	-9,223,372,036,854,775,808 ~ 9,223,372,036,854,775,807
	unsigned long (int)	8 byte (64 bit)	0 ~ 18,446,744,073,709,551,615
	(signed) long long (int)	8 byte (64 bit)	-9,223,372,036,854,775,808 ~ 9,223,372,036,854,775,807
	unsigned long long (int)	8 byte (64 bit)	0 ~ 18,446,744,073,709,551,615
실수형	float	4byte (32bit)	±3.4×10^(-37) ~ ±3.4×10^(38)
	double	8byte (64bit)	±1.7×10^(-307) ~ ±1.7×10^(308)
	long double	8byte (64bit)	±1.7×10^(-307) ~ ±1.7×10^(308) 이상

 

 

 

 

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https://sweetnew.tistory.com/16

[C++] 자료형의 크기와 범위 (논리, 자료, 정수)