Control Flow Statements in C++ MCQ question and answer with solution

31

What is the correct syntax for the 'do-while' loop in C++?

A) while { condition } { statement; } B) do { condition; } while (statement); C) do { statement; } while (condition); D) do (condition) { statement; } while;

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Answer & Solution

Answer: Option C

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32

What will be the output of the following code: int i = 0; while (i < 5) { cout << i << " "; ++i; } in C++?

A) Compilation error B) 1 2 3 4 C) 0 1 2 3 4 D) 0 1 2 3

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Answer & Solution

Answer: Option C

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33

What is the syntax for the 'switch' statement in C++?

A) switch (expression) { case constant1: statement1; case constant2: statement2; default: defaultStatement; } B) switch (expression) { case constant1: statement1; case constant2: statement2; } C) switch (expression) { case constant1: statement1; default: defaultStatement; } D) switch (expression) { case constant1: statement1; break; case constant2: statement2; break; default: defaultStatement; }

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Answer: Option D

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34

In C++, what is the purpose of the 'if-else' statement?

A) Allows execution of different blocks of code based on a condition B) Terminates the program C) Executes the same block of code repeatedly D) Skips the current iteration in a loop

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Answer: Option A

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35

What will be the output of the following code: int i = 5; if (i != 5) cout << "Not equal"; else cout << "Equal"; in C++?

A) Compilation error B) 5 C) Not equal D) Equal

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Answer: Option D

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36

What is the purpose of the 'if' statement in C++?

A) Executes a block of code repeatedly until a condition becomes true B) Executes a block of code only once C) Executes a block of code if a condition is true D) Terminates the program

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Answer: Option C

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37

What is the output of the following code: int i = 0; do { cout << i << " "; i++; } while (i < 3); in C++?

A) 0 1 2 3 B) 0 1 2 C) Compilation error D) 1 2 3

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Answer & Solution

Answer: Option B

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38

What does the 'continue' statement do in a loop in C++?

A) Restarts the loop B) Skips the remaining code in the loop C) Terminates the loop D) Skips the current iteration and continues with the next iteration

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Answer: Option D

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39

What is the output of the following code: for (int i = 0; i < 5; ++i) { if (i == 3) continue; cout << i << " "; } in C++?

A) 0 1 2 3 B) 0 1 2 3 4 C) 0 1 2 4 D) Compilation error

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Answer & Solution

Answer: Option C

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40

What will be the output of the following code: for (int i = 0; i < 3; ++i) { for (int j = 0; j < 2; ++j) { cout << i << j << " "; } } in C++?

A) 00 11 22 33 B) 00 10 20 01 11 C) Compilation error D) 00 01 10 11

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Answer: Option D

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Control Flow Statements in C++ MCQ question and answer with solution | C++ Programimg MCQs