Quiz for Control Flow

Q1: Which keyword is used to make a decision in Java?

A. if B. switch C. case D. loop

Q2: Which loop always executes at least once?

A. for B. while C. do-while D. foreach

Q3: Which statement skips the current iteration in a loop?

A. continue B. break C. return D. exit

Q4: What is the purpose of the break statement in Java?

A. To exit a loop or switch B. To pause a loop C. To end the program D. To skip iteration

Q5: What keyword is used to exit from a loop prematurely?

A. break B. continue C. return D. stop

Q6: Which statement is used for multiple selection?

A. if B. else C. switch D. case

Q7: Which keyword defines a block in switch for comparison?

A. match B. compare C. case D. branch

Q8: What will happen if break is omitted in switch-case?

A. Compilation error B. Only default runs C. Fall-through to next case D. Program exits

Q9: What is an enhanced for loop used for?

A. Iterating collections B. Infinite loops C. Conditional flow D. Switch statements

Q10: Which loop is evaluated before executing the loop body?

A. do-while B. for C. while D. Both B and C

Q11: Which statement is used to return from a method?

A. continue B. break C. return D. exit

Q12: Which keyword is used to repeat a block of code while a condition is true?

A. repeat B. do C. loop D. while

Q13: What type of control structure is 'if-else'?

A. Loop B. Decision-making C. Switch D. Exception handling

Q14: Which keyword is used to stop a loop and transfer control outside?

A. break B. continue C. stop D. exit

Q15: What does 'continue' do in a loop?

A. Exits loop B. Repeats iteration C. Skips to next iteration D. Pauses loop

Q16: Which control structure handles multiple paths based on a value?

A. if-else B. for C. switch D. while

Q17: What is the minimum number of times a do-while loop runs?

A. 0 B. 1 C. Infinite D. Unknown

Q18: How many times does a 'for' loop run if the condition is false initially?

A. 1 B. 0 C. 2 D. Infinite

Q19: Can you use 'break' inside nested loops?

A. No B. Yes, exits all loops C. Yes, exits inner loop only D. Only in 'for' loops

Q20: Which statement controls decision-making in Java?

A. if B. for C. case D. while

Q21: Which control flow keyword must be used with 'switch' to prevent fall-through?

A. case B. stop C. break D. return

Q22: How many else blocks can you use with one if?

A. Only one B. Unlimited C. None D. Two

Q23: What happens if you forget to use 'break' in a switch block?

A. Only the matched case runs B. Program crashes C. Fall-through happens D. Compilation fails

Q24: Which loop is best suited for iterating arrays?

A. while B. do-while C. for-each D. switch