C Programming Conditional Statements Quiz

Which of the following statements is true about an `if` statement in C?

• It must always be followed by an `else` block.

• It can have multiple `else if` blocks.

• It can only contain a single condition.

• It does not allow nested conditions.

What does the `else` keyword do in an `if-else` statement?

• It executes code if the `if` condition is true.

• It provides an alternative block of code to execute if the `if` condition is false.

• It ends the `if-else` block.

• It begins a new `if` condition.

In a `switch` statement, what is the purpose of the `case` keyword?

• To provide a default case when no other cases match.

• To define a specific block of code to execute based on the value of the switch expression.

• To exit the `switch` statement.

• To initialize variables used in the `switch` statement.

When is the `default` case in a `switch` statement executed?

• When the `switch` expression matches the `default` case value.

• When none of the `case` labels match the `switch` expression value.

• When the `switch` statement is first encountered.

• When a `break` statement is not present in a `case`.

Which operator is used to combine multiple boolean expressions in an `if` statement?

• &

• &&

• ||

• |

What is the difference between `&&` and `||` operators in conditional statements?

• `&&` is a bitwise operator, while `||` is a logical operator.

• `&&` returns true if both conditions are true, while `||` returns true if at least one condition is true.

• `&&` returns true if at least one condition is true, while `||` returns true if both conditions are true.

• `&&` and `||` have the same functionality.

In which of the following situations is a conditional statement necessary?

• To perform arithmetic operations.

• To execute different blocks of code based on certain conditions.

• To declare variables.

• To define functions.

Which statement about `if-else` and `switch` statements is correct?

• `if-else` can be used for both integer and floating-point comparisons, while `switch` is limited to integer values.

• `switch` can be used for floating-point comparisons, while `if-else` cannot.

• `if-else` can only be used for integer comparisons.

• Both `if-else` and `switch` are limited to integer comparisons only.

What is the purpose of a `break` statement in a `switch` case?

• To end the entire program.

• To exit the `switch` block and prevent execution from falling through to the next case.

• To restart the `switch` statement.

• To skip the current `case` and continue with the next `case`.

Can an `if` statement be nested inside another `if` statement?

• No, `if` statements cannot be nested.

• Yes, nesting `if` statements is allowed and commonly used.

• Only one level of nesting is allowed.

• An `if` statement can only be nested inside a `switch` statement.