using theswitchstatement with thestring.

Complete the given code in the C# block by performing the following tasks:

1. Declare aswitchblock with the input case as astringstr.
2. Declare two cases asaddandsum, and useConsole.WriteLine()to display the sum of the two variablesaandb.
3. Use thebreakstatement to take the control outside theswitchblock after displaying the sum of the variables.
4. Declare two cases asdiffandsub, and useConsole.WriteLine()to display the difference of the two variablesaandb.
5. Use thebreakstatement to take the control outside theswitchblock after displaying the difference of the variables.
6. Declare adefaultcase and useConsole.WriteLine()to display the product of the two variablesaandb.
7. Use thebreakstatement to take the control outside theswitchblock after displaying the product of the variables.

Note:In the C# block, replace the comments with the appropriate code, if required.

Sample input:

sum 9 

7

Sample output:

16

static public void checkStr(string str, int a, int b)

{

//your code here//

}