Quiz on Control Structures

What is the syntax of 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 does a switch case statement work in C?

• A switch case statement evaluates an expression and executes code based on matching case labels.

• A switch case statement only works with integer values.

• A switch case statement can only have one case label.

• A switch case statement requires a loop to function properly.

What is the purpose of a for loop in C?

• To define a function in C

• To handle errors in C

• To create a new variable in C

• The purpose of a for loop in C is to facilitate repeated execution of a block of code for a defined number of iterations.

How do you declare a while loop in C?

• for(condition) { // code to execute }

• while(condition) { // code to execute }

• repeat(condition) { // code to execute }

• do while(condition) { // code to execute }

What is the difference between a while loop and a do-while loop?

• A while loop is used for infinite loops, while a do-while loop is not.

• A while loop executes at least once, while a do-while loop may not execute at all.

• Both loops execute the same number of times regardless of the condition.

• The main difference is that a while loop may not execute at all if the condition is false, while a do-while loop always executes at least once.

Can you nest if statements in C? Provide an example.

• C does not support conditional statements

• Example: if (condition1) { if (condition2) { // code to execute if both condition1 and condition2 are true } }

• if statements cannot be nested in C

• You can only use one if statement at a time

What is the syntax for a conditional operator in C?

• condition ? value_if_false : value_if_true

• condition : value_if_true ? value_if_false

• condition ? value_if_true : value_if_false

• if(condition) value_if_true else value_if_false

How do you write an if-else statement in C?

• if { /* code */ } else (condition) { /* code */ }

• if (condition) { /* code */ } else { /* code */ }

• if (condition) { /* code */ } else: { /* code */ }

• if condition { /* code */ } else { /* code */ }

What happens if no case matches in a switch statement?

• The switch statement will throw an error if no case matches.

• The switch statement will loop back to the first case if no case matches.

• The switch statement will execute the default case if no case matches.

• The switch statement will exit without executing any case code if no case matches.

How can you use a break statement in a loop?

• You can use a break statement to pause the loop temporarily.

• You can use a break statement to continue looping indefinitely.

• You can use a break statement in a loop to exit the loop when a specific condition is met.

• A break statement is used to skip the current iteration of the loop.