C # relational operators and relational expressions

Relational operation is actually a kind of logical operation, we can interpret it as a "judgment", the result of judgment is either "true" or "false", that is, the return value of the relational expression is always a Boolean value. C # defines the precedence of the relational operator over the arithmetic operator, which is higher than the assignment operator.

7.4.1 comparison operations

7.4.2 is operator

7.4.3 as operator

7.4.4 Relationship Expressions

The equation that joins two expressions with the relational operator is the relational expression. The value of a relational expression is the return value of the relational operator, a Boolean value. A relationship expression can again be the operand of a relational operator, or it can be assigned to an assignment expression as a Boolean value. For example, the following are legitimate relational expressions:

A>b, (A=b) >c, (a>b) > (c<d), (a>b) ==c