Free Test Decision making if, if... – C++ Lan...

Q1: Which statement is used to make a decision in C++?

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

Q2: What is the output of if(0) { cout << "True"; } else { cout << "False"; }

A. True B. False C. Compilation error D. No output

Q3: Which keyword is used for multiple conditional branches?

A. switch B. for C. while D. goto

Q4: In a switch statement, what type must the controlling expression be?

A. integral type B. float C. double D. string

Q5: Which statement exits a switch case?

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

Q6: What will happen if break is omitted in a switch case?

A. No effect B. Fall through to next case C. Compilation error D. Program terminates

Q7: Which operator is used in if-else for condition checking?

A. == B. = C. != D. &

Q8: How do you write an if statement to check if variable x is greater than 0?

A. if(x > 0) B. if x > 0 C. if(x >= 0) D. if x >= 0

Q9: Which statement is NOT a decision-making statement?

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

Q10: Can switch statements handle string expressions in standard C++?

A. Yes B. No C. Only in C++11 D. Depends on compiler

Q11: What happens if no case matches in a switch statement?

A. Default case runs if present B. Error C. Last case runs D. Program halts

Q12: Which is the correct syntax for an if-else statement?

A. if(condition) { } else { } B. if condition { } else { } C. if(condition) then { } else { } D. if condition then { } else { }

Q13: Is it mandatory to have an else block with an if statement?

A. Yes B. No C. Only in loops D. Only with switch

Q14: What value does the expression (x == y) return?

A. true or false B. integer value C. string D. void

Q15: Can the condition in if statement be any expression?

A. Yes, evaluates to bool B. No, must be integer C. No, must be float D. Only variables allowed

Q16: What is the purpose of the default label in switch?

A. Handle unmatched cases B. End switch C. Start switch D. Declare variables

Q17: Which is correct to test if x is NOT equal to y?

A. if(x != y) B. if(x <> y) C. if(x =! y) D. if(x = y)

Q18: Which of these is a valid case label?

A. case 5: B. case x+1: C. case 5.5: D. case "five":

Q19: Can an if statement contain multiple conditions?

A. Yes, using logical operators B. No C. Only one condition allowed D. Only in switch

Q20: Which of the following is a ternary conditional operator in C++?

A. ?: B. ?? C. if else D. switch

Quiz for Decision making if, if-else, switch