Understanding If Else in C Programming

What is the correct syntax for an if statement in C?

• if (condition) { /* code to execute */ }

• if { condition } { /* code to execute */ }

• if condition { /* code to execute */ }

• if (condition) /* code to execute */ }

How do you write a nested if else statement in C?

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

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

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

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

What is the purpose of the else keyword in an if statement?

• The else keyword is used to end an if statement.

• The else keyword is used to define a new function.

• The else keyword allows for executing code when the if condition is false.

• The else keyword is for declaring variables.

How does a switch case statement differ from an if else statement?

• A switch case statement matches a single expression against multiple cases, while an if else statement evaluates conditions sequentially.

• A switch case statement can only be used with integers, while if else can be used with strings.

• An if else statement is faster than a switch case statement in all scenarios.

• A switch case statement can only handle boolean conditions, while if else can handle any type of condition.

Can you have multiple else if statements in C?

• You can only have one else if statement in C.

• Yes, you can have multiple else if statements in C.

• No, else if statements are not allowed in C.

• else if statements can only be used in C++ but not in C.

What will be the output of the following code: if(x > 10) { printf('Greater'); } else { printf('Smaller'); }?

• Output will always be 'Smaller'.

• Output will be 'Undefined' if x is not a number.

• Output will always be 'Greater'.

• Output depends on the value of x.

In a nested if else structure, how is the flow of control determined?

• The flow of control is fixed and does not change based on conditions.

• The flow of control is random and unpredictable.

• The flow of control is determined by the evaluation of conditions in sequence.

• The flow of control is determined by user input only.

When should you prefer switch case over if else statements?

• Switch case is better for handling ranges of values.

• Prefer if else statements for a single discrete value.

• Use switch case for complex boolean conditions.

• Prefer switch case over if else statements when dealing with multiple discrete values for a single variable.

What happens if no case matches in a switch statement?

• The switch statement does nothing if no case matches, unless a default case is provided.

• The switch statement throws an error if no case matches.

• The switch statement automatically executes the first case.

• The switch statement returns a null value if no case matches.

Can you use a switch case statement with a character variable?

• Yes, you can use a switch case statement with a character variable.

• No, switch case statements only work with integers.

• Switch case statements cannot be used in any programming language.

• Yes, but only with string variables.