C switch Statement
1. What is the switch case in C?
The switch case statement is a flow control statement in which we can define a switch variable and then execute different code based on the value of the switch variable. It is an alternative of if else if ladder.
2. What is the case in the switch statement in C?
The case keyword is used to define the different cases and their associated code in the switch statement.
3. What does the break in the switch case do?
The break keyword is used to exit the switch block after executing the matching case.
4. What are the differences between switch and if else if ladder in C?
Following are the main differences between C switch and C if else if ladder:
switch | if else if |
|---|---|
| It executes the different cases on the basis of the value of the switch variable. | It executes the different blocks based on the condition specified. |
| It can only evaluate the int or char type expressions. | It can evaluate any type of expression. |
| Faster and easier to read for the large number of conditions. | It can get messy when there are lots of conditions. |
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Switch Statement in C
Switch case statement evaluates a given expression and based on the evaluated value(matching a certain condition), it executes the statements associated with it. Basically, it is used to perform different actions based on different conditions(cases).
- Switch case statements follow a selection-control mechanism and allow a value to change control of execution.
- They are a substitute for long if statements that compare a variable to several integral values.
- The switch statement is a multiway branch statement. It provides an easy way to dispatch execution to different parts of code based on the value of the expression.
In C, the switch case statement is used for executing one condition from multiple conditions. It is similar to an if-else-if ladder.
The switch statement consists of conditional-based cases and a default case.