C switch.case Statement. In this article, you will learn to create a switch statement in C programming (with an example). The ladder if.else.if statement allows you to execute a block code among many alternatives. If you are checking on the value of a single variable in ladder if.else.if, it is better to use switch statement. The switch statement in C is a control statement that is useful in a limited number of cases. The switch statement resembles a compound if statement by including a number of different possibilities rather than a single test: The value of expression must be an integer (int, long, or char). C switch Statements - C switch statement is used when you have multiple possibilities for the if statement. Web Design HTML Tutorials Online HTML, CSS.
C: Switch Statements Sometimes when creating a C program, you run into a situation in which you want to compare one thing to a number of other things. Let's say, for example, that you took a character from the user and wanted to compare this to a number of characters to perform different actions.
Apr 11, 2020 What is a Switch Statement? A switch statement tests the value of a variable and compares it with multiple cases. Once the case match is found, a block of statements associated with that particular ca.
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A switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each switch case.
Syntax
The syntax for a switch statement in C programming language is as follows −
The following rules apply to a switch statement −
The expression used in a switch statement must have an integral or enumerated type, or be of a class type in which the class has a single conversion function to an integral or enumerated type.
You can have any number of case statements within a switch. Each case is followed by the value to be compared to and a colon.
The constant-expression for a case must be the same data type as the variable in the switch, and it must be a constant or a literal.
When the variable being switched on is equal to a case, the statements following that case will execute until a break statement is reached.
When a break statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement. Virtual instruments vst plugins free download.
Not every case needs to contain a break. If no break appears, the flow of control will fall through to subsequent cases until a break is reached.
A switch statement can have an optional default case, which must appear at the end of the switch. The default case can be used for performing a task when none of the cases is true. No break is needed in the default case.
Flow Diagram
Example
When the above code is compiled and executed, it produces the following result −
Dev C++ Switch Case Example 1
The C++ switch statement is used when you have multiple possibilities for the if statement.
The basic format of the switch statement is:
Syntax:
After the end of each block it is necessary to insert a break statement because if the programmers do not use the break statement, all consecutive blocks of codes will get executed from each and every case onwards after matching the case block.
Example of a C++ Program to Demonstrate Switch Statement
Example:
Switch C++ Examples
When none of the cases is evaluated to true, the default case will be executed, and break statement is not required for default statement.