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Anatomy of Storage Size, Value Range, and Output Format of Basic Data Types in C Language

2022-08-09 17:47:00 【I'm free*】

Table of Contents

One.Integer

2.Real

Three. Character

One.Integer

typeStorage sizevalue rangeOutput format
int4 bytes (32 bits)

(-2,147,483,648——2,147,483,648)

(-2^31——2^31)

%d
short2 bytes (16 bits)

(-32,768——32,768)

(-2^15——2^15)

%d
long4 bytes (32 bits)

(-2,147,483,648——2,147,483,648)

(-2^31——2^31)

%ld
long long8 bytes (64-bit)

(-9,223,372,036,854,775,808—— 9,223,372,036,854,775,808)

(-2^63-2^63)

%lld
unsigned int4 bytes (32 bits)(0——4,294,967,296)%u

2.Real

TypeStorage sizevalue rangeOutput formatAccuracy
float4 bytes (32 bits)-3.4E+38——3.4E+38%f6-7
double8 bytes (64-bit)-1.7E+308——1.7E+308%lf15-16

Three.Character

typeStorage sizevalue rangeOutput format
char1 byte (8 bits)-128——127%c
unsigned char1 byte (8 bits)0-255

%c

%hhu

 

Note:%hhu converts characters to ASCII values

 

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