Switch and case c#. C Language Switch Case with Examples 2022-10-22
Switch and case c# Rating:
The switch and case statements in C# provide a convenient way to execute different code blocks based on the value of a particular expression. The switch statement allows you to evaluate an expression, and then execute a block of code based on the value of that expression. The case statement specifies the value that the expression being evaluated by the switch statement should match in order to execute the code block associated with that case.
Here is an example of how to use the switch and case statements in C#:
Console.WriteLine("Number is 1");
Console.WriteLine("Number is 2");
Console.WriteLine("Number is 3");
Console.WriteLine("Number is not 1, 2, or 3");
In this example, the value of the num variable is evaluated by the switch statement. If the value of num is 1, the code block associated with the case 1 statement will be executed, and the message "Number is 1" will be printed to the console. If the value of num is 2, the code block associated with the case 2 statement will be executed, and the message "Number is 2" will be printed to the console. If the value of num is 3, the code block associated with the case 3 statement will be executed, and the message "Number is 3" will be printed to the console. If the value of num is none of these values, the code block associated with the default statement will be executed, and the message "Number is not 1, 2, or 3" will be printed to the console.
One thing to note is that the break statement is used to exit the switch statement and prevent the code blocks for any subsequent cases from being executed. If the break statement is not used, the code blocks for all cases after the matching case will be executed, unless a break statement is encountered.
Another thing to note is that the switch statement in C# can only be used with certain types of expressions, including integral types (such as int and long), enumerated types, and strings.
In summary, the switch and case statements in C# provide a convenient way to execute different code blocks based on the value of a particular expression, and are useful for situations where you need to perform different actions based on a range of possible values.
C switch case using char
Use the See also. This is just like else statement in an if-else statement. } The output: As we entered the value 50, it did not match any case. Also Read: What is switch case in c language? Whenever the value of test-expression is not matched with any of the cases inside the switch, then the default will be executed. The value of the expression is compared with the value of each case. Whenever the value of test-expression is not matched with any of the cases inside the switch, then the default will be executed. I hope you found this informative and helpful, stay tuned for more tutorials on similar topics.
The default case is an optional one. Control conditions are the basic building blocks of C programming language. For such situations, we use default in menu driven program. In other words, we can say, it is a multiway decision statement. Each value is called a case, and the variable being switched on is checked for each case. The value of the expressions in a switch-case statement must be an ordinal type i.
switch…case in C (Switch Statement in C) with Examples
The switch statement is a multiway branch statement. Feedback In this article The switch and case statements help control complex conditional and branching operations. Without break, the program continues to the next labeled statement, executing the statements until a break or the end of the statement is reached. WriteLine "Tuesday" ; break; case 3: Console. Even though the inside the cases might differ, two cases cannot have the same. All these expressions evaluate to Integer constants, so they are valid. It cannot contain any variables, unlike in the switch clause.
It is always safer to have NULL check on pointer before accessing it More on In the above code snippet, example is taken for double pointer. . Explanation: The switch -2 matches with case 2-4: and all statements following case 2-4: are executed till a break or end of switch is encountered. This is not compulsory to write the break statement inside the case. If you use multiple if-else constructs in the program, a program might become difficult to read and comprehend. This is not the same for the if-else ladder where all the if and else if blocks are stored as a list and it takes more time to access the bottommost else-if as all the expressions of the above else-ifs need to be evaluated first. It is a looping statement in programming.
. If omitted, execution will continue on into the next case. This terminates the switch statement. Writing a continue statement inside a switch will not affect the flow, unlike a loop. The default case is optional but, it is a good practice to have a default case.
The flow of control will fall through to subsequent cases until a break is reached. Which is an example of a switch in C? Can we use condition in switch-case? The expression is evaluated once and compared with the values of each case label. Switch statement consists of conditional based cases and a default case. Given a digit from 0-9 print the English word for the digit using a C program Solution: This is the example use case we discussed in the Introduction section of this article, we have already seen that this program can be implemented using the if. There is one potential problem with the if-else statement which is the complexity of the program increases whenever the number of alternative path increases. Some Important Examples of switch case in c Language Find the output of the following program.
It provides an easy way to dispatch execution to different parts of code based on the value of the expression. While using switch case in c language, writing break is not compulsory. This value is compared with all the cases until case whose label four is found in the program. We can understand this in given below output. This number is tested against five cases and if evaluated as true, its statement is executed.
If the entered value does not match any case, the default case executes and displays its statement. If any values from 1, 2, 3 and 4 matches with the value of i then respective printf statement will be executed, otherwise the last else statement will be executed. Can I pass any type of variable to a switch statement give example? When we have multiple conditions and we need to execute a block of statements when a particular condition is satisfied. Break of default is optional. User is asked to enter initial character of displayed operations. The value of each case constant-expression must be unique within the statement body. It branches to the end of the switch statement.
Note: Sometimes when default is not placed at the end of switch case program, we should use break statement with the default case. Examples might be simplified to improve reading and learning. When a break statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement. Using char type in the switch statement example In the following C++ program, we used the char type variable as an expression in the switch case statement. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Each value is called a case, and the variable being switched on is checked for each switch case.
C If and Switch Case Examples (if, if else, if else if, nested if)
It may appear anywhere in the body of the switch statement. This creates problems in the program and does not provide the desired output. Can we write condition in switch case? Such type of program can be written using switch case. But yes, No matter how many inputs or operations, they could in fact be implemented using switch and could be considered an extension to our example. Using a switch case in c language, we can perform various actions on the based on the evaluation of the single expression. Only one default is allowed. WriteLine "Well done" ; break; case 'D': Console.