![]() ![]() The default case can be used for performing a task when none of the cases is true. If no break appears, the flow of control will fall through to subsequent cases until a break is reached.Ī switch statement can have an optional default case, which must appear at the end of the switch. When a break statement is reached, the switch terminates, and the flow of control jumps to the next line following the switch statement. When the variable being switched on is equal to a case, the statements following that case will execute until a break statement is reached. ![]() 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. Each case is followed by the value to be compared to and a colon. It is optional and if not used, the control transfer to the next case. Break keyword can be used to break the control and take out control from the switch. It executes case only if input value matches otherwise default case executes. You can have any number of case statements within a switch. Switch case allows only integer and character constants in case expression. 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. This outputs 2 because the var x statement within the block is in the same scope as the var x statement before the block. The block is delimited by a pair of curly braces. The following rules apply to a switch statement − The most basic statement is a block statement, which is used to group statements. * you can have any number of case statements */ The syntax for a switch statement in C programming language is as follows − Each value is called a case, and the variable being switched on is checked for each switch case. A switch statement allows a variable to be tested for equality against a list of values. ![]()
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