Type System

Primitive Types

Type	Size	Range
int	32-bit	-2,147,483,648 to 2,147,483,647
int64	64-bit	-9.2 × 10¹⁸ to 9.2 × 10¹⁸
uint64	64-bit	0 to 1.8 × 10¹⁹
float	64-bit	Double precision
str	—	String
bool	1-bit	true or false

int x = 42
int64 big = 9223372036854775807
uint64 huge = 18446744073709551615
float pi = 3.14159
str name = "Cpyte"
bool valid = true

64-bit Integers

# Hex literals
int64 hex_max = 0x7FFFFFFFFFFFFFFF
uint64 hex_u64 = 0xFFFFFFFFFFFFFFFF

# Type promotion
int small = 42
int64 large = 1000000000000
int64 result = small + large  # small promoted to int64

Pointers

int* ptr = new int
*ptr = 42

int** pptr = &ptr
print(**pptr)  # 42

int64* large_ptr = new int64
uint64* unsigned_ptr = new uint64

Arrays

int[] numbers = new int[10]
numbers[0] = 1
numbers[9] = 99

str[] names = new str[5]
names[0] = "Alice"

# 64-bit arrays
int64[] big_data = new int64[1000000]

Type Inference

The compiler infers types from literals and expressions:

x = 42          # int
y = 3.14        # float
big = 9223372036854775807  # int64
result = x + y  # float

Sizeof

int_size = sizeof(int)      # 4
ptr_size = sizeof(void*)    # 8