C # System Learning (third to fourth lesson variable)

The complement of a positive number that is formally in the complement is itself:

Complement of negative numbers:

1. The absolute value of the number is represented as a binary form

2. Bitwise inversion (0 to 1 to 0)

3. Plus 1

Positive type

int 4 bytes

Short 2 bytes

A long 8 bytes

The highest bit represents the sign bit (0 positive, 1 negative)

UINT 32 bits all represent positive numbers with no sign bit (similar to ushort,ulong,sbyte)

sbyte-128--127

Real type variables

float float x=3.14f (7 significant digits)

Double

Decimal

C # System Learning (third to fourth lesson variable)