What is the syntax of switch case?
A general syntax of how switch-case is implemented in a ‘C’ program is as follows: switch( expression ) { case value-1: Block-1; Break; case value-2: Block-2; Break; case value-n: Block-n; Break; default: Block-1; Break; } Statement-x; The expression can be integer expression or a character expression.
What is switch case with example?
Switch case example 2 In C language, the switch statement is fall through; it means if you don’t use a break statement in the switch case, all the cases after the matching case will be executed. Let’s try to understand the fall through state of switch statement by the example given below. #include
What is a case command?
case command in Linux is the best alternative when we had to use multiple if/elif on a single variable. It is used to execute the commands based on the pattern matching.
How do you program a switch?
How to configure a network switch
- Step 1: Connect to the console.
- Step 2: Set a management IP and default gateway.
- Step 3: Set hostname and domain name.
- Step 4: Set logins on VTY lines and console port.
- Step 5: Set Privileged EXEC password.
- Step 6: Enable SSH.
- Step 7: Create VLANs.
- Step 8: Add access ports to a VLAN.
Why are switch statements used?
In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via search and map.
Can we use char in switch case?
You can use char ‘s for the switch expression and cases as well.
What is switch in Unix?
The switch statement is used to perform one of several blocks of commands depending on whether a specified value equals one of several wildcarded values. The case statement is used together with the switch statement in order to determine which block should be performed. Each case command is given one or more parameter.
How do you write a switch case in shell?
In shell scripting switch case is represented using keywords case and esac which will do multilevel branching and checking in a better way than multiple if-else conditions. Switch case will need an expression which it needs to evaluate and need to perform multiple operations based on the outcome of the expression.
What are the three basic functions of a switch?
Three basic functins of a switch are Learning, Forwarding and Preventing Layer 2 Loops.
- Learning. Learning is the process of obtaining the MAC address of connected devices.
- Forwarding.
- Preventing Layer 2 Switching Loops.