Understanding Selection Statement

Every application needs to be able to select from choices and branch along different code paths. The two selection statements in C# are if and switch. We can use it for all our code, but the switch can simplify it in common scenarios, such as when a single variable with multiple values requires different processing.

Branching with the if statement

The if statement determines which branch to follow by evaluating a boolean expression. If the expression is true, then the block executes. The else block is optional and executes if the if expression is false.