Summary

This chapter began with an introduction to the C# operators related to assignment and arithmetic. Next, you used the operators along with the const keyword to declare constant expressions. Coverage of all of the C# operators was not sequential, however. Before discussing the relational and logical comparison operators, I introduced the if statement and the important concepts of code blocks and scope. To close out the coverage of operators I discussed the bitwise operators, especially regarding masks.

Operator precedence was discussed earlier in the chapter, but Table 3.5 summarizes the order of precedence across all operators, including several that are not yet covered.

Table 3.5. Operator Order of Precedence ^[a]

Category	Operators
Primary	x.y f(x) a[x] x++ x-- new typeof checked unchecked
Unary	+ - ! ~ ++x --x (T)x
Multiplicative	* / %
Additive	+ -;
Shift	<< >>
Relational and type testing	< > <= >= is as
Equality	== !=
Logical AND	&
Logical XOR	^
Logical OR	|
Conditional AND	&&
Conditional OR	||
Conditional	?:
Assignment	= *= /= %= += -;= <<= >>= &= ^= |=

^[a] Rows appear in order of precedence from highest to lowest.

Given coverage of most of the operators, the next topic was control flow statements. The last sections of the chapter detailed the preprocessor directives and the bit operators, which included code blocks, scope, Boolean expressions, and bitwise operators.

Perhaps one of the best ways to review all of the content covered in Chapters 13 is to look at the tic-tac-toe program found in Appendix B. By reviewing the program, you can see one way in which you can combine all that you have learned into a complete program.