C# 0 The Complete Reference

Nybble

 to 

int

 and 

from 

int

 to 

Nybble

, a 

Nybble

 object can be freely mixed in arithmetic expressions. For 

example, consider this expression from the program:

t = a * 2 + 3;

Here, 

t

 is an 

int

, as are 2 and 3, but 

a

 is a 

Nybble

. These two types are compatible in the 

expression because of the implicit conversion of 

Nybble

 to 

int

. In this case, since the rest 

of the expression is of type 

int

,

a

 is converted to 

int

 by its conversion method.

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The conversion from 

int

 to 

Nybble

 allows a 

Nybble

 object to be assigned an 

int

 value. 

For example, in the program, the statement

a = 19;

works like this. The conversion operator from 

int

 to 

Nybble

 is executed. This causes a new 

Nybble

 object to be created that contains the low-order 4 bits of the value 19 (which is 3 

because 19 overflows the range of a 

Nybble

). This object is then assigned to 

a

. Without the 

conversion operators, such expressions would not be allowed.

The conversion of