# Can We Use Double In Switch Case?

## How do you write a switch case in an algorithm?

A general syntax of how switch-case is implemented in a ‘C’ program is as follows: switch( expression ) { case value-1: Block-1; Break; case value-2: Block-2; Break; case value-n: Block-n; Break; default: Block-1; Break; } Statement-x; The expression can be integer expression or a character expression..

## Why switch case is faster than if else?

A switch statement is usually more efficient than a set of nested ifs. The compiler can do this because it knows that the case constants are all the same type and simply must be compared for equality with the switch expression, while in case of if expressions, the compiler has no such knowledge. …

## What is difference between if else and switch case?

Key Differences Between if-else and switch The expression inside if statement decides whether to execute the statements inside if block or under else block. On the other hand, the expression inside a switch statement decides which case to execute. You can have multiple if statement for multiple choice of statements.

## How do you check the condition of a switch case?

Here the mark is defined as 100 and when switch statement is executed, the condition will be checked as follows.case mark <=35. true => (100 <= 35) - this will give the result false. ... case mark >=36 && mark <= 60. true === (100 >=36 && 100 <= 60) ... case mark >= 61 && mark <= 80. ... case mark >= 81.

## Can we use if else in switch case?

In the case of ‘if-else’ statement, either the ‘if’ block or the ‘else’ block will be executed based on the condition. In the case of the ‘switch’ statement, one case after another will be executed until the break keyword is not found, or the default statement is executed.

## Can multiple constant be used in case statement?

It can also be an expression which yields an integer value. Each case statement must have only one constant. Multiple constants in the single case statement are not allowed. … After each case constant, we can have any number of statements or no statement at all.

## How do you pass multiple values in a switch case?

Second, the only way to use switch with multiple variables is to combine them into one primitive (string, number, etc) value: var stateA = “foo”; var stateB = “bar”; switch (stateA + “-” + stateB) { case “foo-bar”: … … }

## How many cases can you have in switch statement?

257 caseStandard C specifies that a switch can have at least 257 case statements. Standard C++ recommends that at least 16,384 case statements be supported! The real value must be implementation dependent.

## Is switch case faster than if?

As it turns out, the switch statement is faster in most cases when compared to if-else , but significantly faster only when the number of conditions is large. The primary difference in performance between the two is that the incremental cost of an additional condition is larger for if-else than it is for switch .

## How do you put two conditions in a switch case?

SWITCH STATEMENT: check multiple conditions using AND operator? default: A: (\$val>=2 && \$val <= 4) A: (\$val>=2 && \$val <= 4) A: (\$val>=2 && \$val <= 4) B: (\$val>=2 && \$val <= 5) D: (\$val>=3 && \$val <= 6) default: