C# 0 The Complete Reference

(x / y)

 to 

int

 results in the truncation of the 

fractional component, and information is lost.

No loss of information occurs when 

b

 is assigned the value 255 because a 

byte

 can hold 

the value 255. However, when the attempt is made to assign 

b

 the value 257, information 

loss occurs because 257 exceeds a 

byte

’s range. In both cases the casts are needed because 

there is no implicit conversion from 

int

 to 

byte

.

When the 

short

 variable 

s

 is assigned the value 32,000 through the 

uint

 variable 

u

, no 

data is lost because a 

short

 can hold the value 32,000. However, in the next assignment, 

u

has the value 64,000, which is outside the range of a 

short

, and data is lost. In both cases the 

casts are needed because there is no implicit conversion from 

uint

 to 

short

.

Next,

u

 is assigned the value 64,000 through the 

long

 variable 

l

. In this case, no data is 

lost because 64,000 is within the range of a 

uint

. However, when the value –12 is assigned 

to

u

, data is lost because a 

uint

 cannot hold negative numbers. In both cases the casts are 

needed because there is no implicit conversion from 

long

 to 

uint

.

Finally, no information is lost, but a cast is needed when assigning a 

byte

 value to 

a

char

.

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