Record the usage of switch case, switchcase

Record the usage of switch case, switchcase

We usually like to use it when making multiple conditions.

Switch (expression)

{

Case: constant 1

Expression 1;

Break;

Case: constant 2

Expression 2;

Break;

Case: constant 3

Expression 3;

Break;

....

Default: constant 4

Expression 4;

Break;

}

Here are some notes for you:

1. Only constants rather than variables can be contained in case;

2. in C #, a switch part is not allowed to be executed to the next switch part. That is to say, break must be added for each case part or a statement that can prevent the case from being executed to the next case, for example:

Case: constant 3

Expression 3;

Break;

Or

Case: constant n

While (true)

Expression n;

Yes.

It is ensured that the switch will not continue to go to the next switch;

3. default can be dispensable. When all cases are not satisfied, the expression in default will be executed;