C Language Zemi

C type

This is an introduction to the types used in C language.

Type that expresses characters

• char --Type that represents a character
• char * --Type that represents a string

Traditional integer type

• Traditional C language integer type
• int type --signed integer type of 16 bits or more

Integer type that guarantees the width and signing / unsigned introduced in C99

• int8_t --Signed 8-bit integer type
• int16_t --Signed 16bit integer type
• int32_t --Signed 32-bit integer type
• int64_t --Signed 64-bit integer type
• uint8_t --Unsigned 8bit integer type
• uint16_t --Unsigned 16bit integer type
• uint32_t --Unsigned 32bit integer type
• uint64_t --Unsigned 64-bit integer type

Floating point type

• float --single precision (32bit) floating point type
• double-double precision (64bit) floating point type

Size type

• size_t type --Size representation type

General-purpose pointer type

• General-purpose pointer type --void *

Integer type that can be converted to and from a pointer

• inpttr_t --Signed integer type of pointer type size
• uintptr_t --Pointer type size unsigned integer type

A special type that means it doesn't exist

• void type-a special type that means it doesn't exist