Quiz - 9 on if-else

What is the basic syntax of an if statement in C?

• if (condition) { // code block }

• if [condition] { // code block }

• if (condition) // code block

• if (condition) // { code block }

How can you nest if-else statements in C?

• if (condition1) { if (condition2) { } else { } } else { }

• { if (condition1) { // code block if (condition2) { // code block } else { // code block } } else { // code block } }

• if (condition1) { if (condition2) { } else { } }

• if (condition1) { if (condition2) { } } else { }

What logical operators can be used in if statements in C?

• |||

• ~

• &&, ||, !

• &

Explain the ternary operator in if-else statements in C.

• The ternary operator in C is a shorthand way of writing an if-else statement.

• The ternary operator in C is equivalent to a switch statement.

• The ternary operator in C can only be used with integers.

• The ternary operator in C is used for bitwise operations.

What are some common mistakes to avoid in if-else statements in C?

• Nesting if-else statements more than 3 levels deep

• Using semicolons after if-else conditions

• Missing curly braces for single-line if-else blocks, using assignment operator '=' instead of comparison operator '==' in conditions, and forgetting to include a default case in switch statements.

• Using '&&' instead of '||' in conditions

When should you use an if-else statement instead of just an if statement?

• When you want to make the code more efficient

• When you want to complicate the code structure

• When you want to handle both true and false conditions based on the same condition.

• When you want to confuse the code logic

How do you combine multiple conditions in an if statement using logical operators?

• Use square brackets to group conditions in an if statement

• Combine conditions using arithmetic operators

• Use logical operators like '&&' and '||' to combine conditions in an if statement.

• Use commas to separate conditions in an if statement

What is the purpose of the else statement in an if-else block?

• To terminate the program execution

• To skip the if statement and proceed to the next block

• To provide an alternative code block to execute when the condition in the if statement evaluates to false.

• To repeat the condition check in the if statement

Can you have multiple else statements in a single if-else block?

• Sometimes

• No

• Maybe

• Yes

Explain the concept of short-circuit evaluation in if statements.

• Short-circuit evaluation skips the first condition and evaluates the second condition first

• Short-circuit evaluation always results in a syntax error

• Short-circuit evaluation means both conditions must be true for the if statement to execute

• Short-circuit evaluation in if statements means that the second condition is only evaluated if the first condition does not determine the outcome.