C# 0 The Complete Reference

decimal

      (unless it is of type 

fl oat

 or 

double

, in which case an error results).

ELSE IF one operand is a 

double

, the second is promoted to 

double

.

ELSE IF one operand is a 

fl oat

, the second is promoted to 

fl oat

.

ELSE IF one operand is a 

ulong

, the second is promoted to 

ulong

 (unless it is

      of type 

sbyte

,

short

,

int

, or 

long

, in which case an error results).

ELSE IF one operand is a 

long

, the second is promoted to 

long

.

ELSE IF one operand is a 

uint

 and the second is of type 

sbyte

,

short

, or 

int

,

      both are promoted to 

long

.

ELSE IF one operand is a 

uint

, the second is promoted to 

uint

.

ELSE both operands are promoted to 

int

.

There are a couple of important points to be made about the type promotion rules. First, 

not all types can be mixed in an expression. Specifically, there is no implicit conversion from