C++ Switch Statement

What is the syntax of a switch statement in C++?

• switch (expression) { case constant1: // code to be executed if expression matches constant1 break; case constant2: // code to be executed if expression matches constant2 break; ... default: // code to be executed if expression doesn't match any constant }

• switch (expression) { case constant1: // code to be executed if expression matches constant1 break; case constant2: // code to be executed if expression matches constant2 break; ... default: // code to be executed if expression doesn't match any constant }

• switch (expression) { case constant1: // code to be executed if expression matches constant1 break; case constant2: // code to be executed if expression matches constant2 break; ... default: // code to be executed if expression doesn't match any constant }

• switch (expression) { case constant1: // code to be executed if expression matches constant1 break; case constant2: // code to be executed if expression matches constant2 break; ... default: // code to be executed if expression doesn't match any constant }

How do you apply a switch statement in a C++ program?

• To apply a switch statement in a C++ program, use the following syntax: switch (expression) { case value1: // code to be executed if expression matches value1 break; case value2: // code to be executed if expression matches value2 break; //... additional cases default: // code to be executed if expression does not match any case }

• Use a for loop instead of a switch statement

• Omit the 'break' keyword after each case

• Use if-else statements instead of a switch statement

Explain the comparison of a switch statement with an if-else statement in C++.

• A switch statement can handle any data type, while an if-else statement is limited to handling only integer values

• The comparison of a switch statement with an if-else statement in C++ is that a switch statement is more suitable for handling multiple conditions based on the value of a single variable, while an if-else statement can be used with any data type and is more flexible in handling different types of conditions.

• A switch statement is less efficient in terms of execution time compared to an if-else statement

• A switch statement is more flexible in handling different types of conditions, while an if-else statement is limited to handling only one condition

What are the limitations of using a switch statement in C++?

• Inability to handle string inputs

• Limitation to only three cases

• Inability to work with floating-point numbers

• Limitations of using a switch statement in C++ include its inability to work with non-integer types, inability to handle ranges of values, and limitation to equality comparisons.

Provide an example of using a switch statement to handle multiple cases in C++.

• switch (dayOfWeek) { case 1: // do something for Monday break; case 2: // do something for Tuesday break; //... and so on default: // do something if none of the above cases match }

• switch (dayOfWeek) { case 1: // do something for Monday break; case 2: // do something for Tuesday break; //... and so on case 4: // do something for Thursday break; default: // do something if none of the above cases match }

• switch (dayOfWeek) { case 1: // do something for Monday break; case 2: // do something for Tuesday break; //... and so on default: // do something if none of the above cases match }

• switch (dayOfWeek) { case 1: // do something for Monday break; case 2: // do something for Tuesday break; //... and so on case 3: // do something for Wednesday break; default: // do something if none of the above cases match }

• switch (dayOfWeek) { case 1: // do something for Monday break; case 2: // do something for Tuesday break; //... and so on case 7: // do something for Sunday break; default: // do something if none of the above cases match }

When should you use a switch statement instead of an if-else statement in C++?

• When you have a long list of conditions to check against a single variable.

• When you want to improve code readability

• When you only have a few conditions to check

• When you want to execute multiple statements for each condition

What happens if a break statement is omitted in a switch case in C++?

• The switch statement will throw an error

• The code will execute the default case

• The control will continue to execute the code in the following case(s) until a break statement is encountered or the switch block ends.

• The control will automatically exit the switch block

How does the default case work in a switch statement in C++?

• The default case is optional and can be omitted

• The default case is executed when none of the other cases match the value of the expression.

• The default case is always executed first

• The default case is only executed if there are no other cases

Discuss the performance implications of using a switch statement versus an if-else statement in C++.

• Switch statements are generally more efficient than if-else statements when there are multiple conditions to be checked in C++.

• Using switch statements can lead to better code readability compared to if-else statements in C++

• Switch statements are less efficient than if-else statements in C++

• Switch statements can only handle single conditions in C++

Explain the role of the switch statement in controlling program flow in C++.

• The switch statement is only used for input/output operations in C++.

• The switch statement is used to declare variables in C++.

• The switch statement is used to compare the value of a variable with multiple case values and execute the corresponding block of code for the matching case.

• The switch statement is used to perform mathematical calculations in C++.