Php switch case3/18/2023 Otherwise, it is not necessary to write default in the switch. Whenever the value of test-expression is not matched with any of the cases inside the switch, then the default will be executed. Break will terminate the case once it is executed and the control will fall out of the switch. This should not happen hence we always have to put break keyword in each case. If we do not put the break in each case then even though the specific case is executed, the switch in C will continue to execute all the cases until the end is reached. The break keyword in each case indicates the end of a particular case.As soon as a case is found the block of statements associated with that particular case is executed and control goes out of the switch. This value is compared with all the cases until case whose label four is found in the program. Suppose the test expression contains value 4. Whenever the switch is executed, the value of test-expression is compared with all the cases which we have defined inside the switch.A block is nothing but multiple statements which are grouped for a particular case.Each of these cases is associated with a block. Case labels always end with a colon ( : ).This creates problems in the program and does not provide the desired output. Then while executing the program, the case that appears first will be executed even though you want the program to execute a second case. Suppose we have two cases with the same label as ‘1’. Remember that case labels should not be same as it may create a problem while executing a program. Value-1, 2, n are case labels which are used to identify each case individually.The expression can be integer expression or a character expression.For example, if the value of numDay variable is 1, the output will be Monday and for the value of 7, it should be Sunday. After that, seven case statements are used one for each day of the Week. A variable is assigned a value (number of the day in Week) which is used as an expression in the switch statement. In this example, the switch statement is used with seven cases. ![]() } An example of using switch case and default statements Java statement here if case 2 is evaluated as trueĭefault: // It will execute if none of the case is true ![]() Java statement here if case 1 is evaluated as trueīreak // It will terminate the switch statement ![]() The general way of using the switch case is: Structure of switch case statement in Java After that, I will explain the difference between the if and switch statement and which one to use depending on the scenario. See the following section for structure and examples of using the switch case statement. The break statement is necessary to exit the switch statement (see explanation in the first example).
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