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Test: Loops - 1 - Software Development MCQ


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30 Questions MCQ Test Basics of C++ - Test: Loops - 1

Test: Loops - 1 for Software Development 2024 is part of Basics of C++ preparation. The Test: Loops - 1 questions and answers have been prepared according to the Software Development exam syllabus.The Test: Loops - 1 MCQs are made for Software Development 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Loops - 1 below.
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Test: Loops - 1 - Question 1

Which loop construct is most suitable when the number of iterations is known in advance?

Detailed Solution for Test: Loops - 1 - Question 1

The for loop is most suitable when the number of iterations is known in advance, as it provides a compact way to specify the initialization, condition, and update expressions in a single line.

Test: Loops - 1 - Question 2

What is the purpose of the break statement in a loop?

Detailed Solution for Test: Loops - 1 - Question 2

The break statement is used to terminate the loop and skip the remaining iterations. It is typically used when a certain condition is met, and you want to exit the loop early.

Test: Loops - 1 - Question 3

Which of the following loop constructs is guaranteed to execute at least once?

Detailed Solution for Test: Loops - 1 - Question 3

The do-while loop is guaranteed to execute at least once because the condition is checked at the end of the loop. This ensures that the loop body executes at least once before checking the condition.

Test: Loops - 1 - Question 4

What is the purpose of the continue statement in a loop?

Detailed Solution for Test: Loops - 1 - Question 4

To skip the current iteration and continue with the next iteration
Explanation: The continue statement is used to skip the current iteration and continue with the next iteration of the loop. It is typically used when a certain condition is met, and you want to skip some code within the loop but continue with the next iteration.

Test: Loops - 1 - Question 5

Which loop construct is best suited when the number of iterations is unknown?

Detailed Solution for Test: Loops - 1 - Question 5

The while loop is best suited when the number of iterations is unknown. It continues to execute as long as the condition specified in the loop header remains true.

Test: Loops - 1 - Question 6

What is an infinite loop?

Detailed Solution for Test: Loops - 1 - Question 6

An infinite loop is a loop that never terminates. It keeps executing indefinitely unless interrupted by an external factor, such as a break statement or a condition that causes the loop to terminate.

Test: Loops - 1 - Question 7

Which loop construct is used to read an unknown number of inputs until a certain condition is met?

Detailed Solution for Test: Loops - 1 - Question 7

The while loop is commonly used to read an unknown number of inputs until a certain condition is met. The loop continues to execute as long as the condition specified in the loop header remains true.

Test: Loops - 1 - Question 8

Which of the following statements is true about nested loops?

Detailed Solution for Test: Loops - 1 - Question 8

Both while loops and for loops can be nested inside each other. This means you can have a loop within another loop, allowing for more complex control flow and iterative operations.

Test: Loops - 1 - Question 9

What is the purpose of the initialization expression in a for loop?

Detailed Solution for Test: Loops - 1 - Question 9

The initialization expression in a for loop is used to initialize the loop variable before the loop starts executing. It typically sets the initial value of the loop variable.

Test: Loops - 1 - Question 10

Which loop construct is used when you want to execute a block of code at least once, even if the condition is false initially?

Detailed Solution for Test: Loops - 1 - Question 10

The do-while loop is used when you want to execute a block of code at least once, even if the condition is false initially. The condition is checked at the end of the loop, ensuring that the loop body executes at least once.

Test: Loops - 1 - Question 11

What will be the output of the following code snippet?

int x = 5;
while (x > 0) {
    cout << x << " ";
    x--;
}

Detailed Solution for Test: Loops - 1 - Question 11

The code initializes the variable 'x' with a value of 5. The while loop iterates as long as 'x' is greater than 0. In each iteration, the value of 'x' is printed, and then it is decremented by 1. The loop continues until 'x' becomes 0.

Test: Loops - 1 - Question 12

What will be the output of the following code snippet?

for (int i = 0; i < 5; i++) {
    if (i == 2)
        continue;
    cout << i << " ";
}

Detailed Solution for Test: Loops - 1 - Question 12

The for loop iterates over the values of 'i' from 0 to 4. In each iteration, the value of 'i' is printed, except when 'i' is equal to 2 due to the 'if' statement. The 'continue' statement skips the remaining code in the current iteration and moves to the next iteration.

Test: Loops - 1 - Question 13

What will be the output of the following code snippet?

int n = 3;
do {
    cout << n << " ";
    n--;
} while (n > 0);

Detailed Solution for Test: Loops - 1 - Question 13

The do-while loop is executed at least once because the condition n > 0 is checked at the end of the loop. In each iteration, the value of n is printed, and then it is decremented by 1. The loop continues until n becomes 0.

Test: Loops - 1 - Question 14

What will be the output of the following code snippet?

int i = 1;
while (i <= 5) {
    cout << i << " ";
    i += 2;
}

Detailed Solution for Test: Loops - 1 - Question 14

The while loop iterates as long as i is less than or equal to 5. In each iteration, the value of i is printed, and then it is incremented by 2. The loop prints the odd numbers from 1 to 5.

Test: Loops - 1 - Question 15

What will be the output of the following code snippet?

int i = 1;
do {
    cout << i << " ";
    i *= 2;
} while (i <= 5);

Detailed Solution for Test: Loops - 1 - Question 15

The do-while loop is executed at least once because the condition i <= 5 is checked at the end of the loop. In each iteration, the value of i is printed, and then it is multiplied by 2. The loop prints the values 1, 2, and 4.

Test: Loops - 1 - Question 16

What will be the output of the following code snippet?

for (int i = 0; i < 3; i++) {
    for (int j = 0; j < 2; j++) {
        cout << i + j << " ";
    }
}

Detailed Solution for Test: Loops - 1 - Question 16

The outer for loop iterates over the values of i from 0 to 2. The inner for loop iterates over the values of j from 0 to 1. In each iteration, the sum of i and j is printed. The loop prints the values 0, 1, 1, 2, 2, 3.

Test: Loops - 1 - Question 17

What will be the output of the following code snippet?

int x = 10;
while (x > 0) {
    x -= 3;
    if (x % 2 == 0)
        continue;
    cout << x << " ";
}

Detailed Solution for Test: Loops - 1 - Question 17

The while loop iterates as long as x is greater than 0. In each iteration, x is decremented by 3. The if statement checks if x is divisible by 2, and if so, the continue statement skips the remaining code in the current iteration. The loop prints the values 7, 4, and 1.

Test: Loops - 1 - Question 18

What will be the output of the following code snippet?

int i = 5;
do {
    cout << i << " ";
    i--;
} while (i > 0);

Detailed Solution for Test: Loops - 1 - Question 18

The do-while loop is executed as long as i is greater than 0. In each iteration, the value of i is printed, and then it is decremented by 1. The loop continues until i becomes 0.

Test: Loops - 1 - Question 19

What will be the output of the following code snippet?

int n = 0;
while (n < 5) {
    cout << n << " ";
    n++;
    if (n == 3)
        break;
}

Detailed Solution for Test: Loops - 1 - Question 19

The while loop iterates as long as n is less than 5. In each iteration, the value of n is printed, and then it is incremented by 1. The loop breaks when n becomes 3 due to the break statement.

Test: Loops - 1 - Question 20

What will be the output of the following code snippet?

for (int i = 0; i < 5; i++) {
    for (int j = 0; j < 3; j++) {
        if (j == 1)
            continue;
        cout << i + j << " ";
    }
}

Detailed Solution for Test: Loops - 1 - Question 20

The outer for loop iterates over the values of i from 0 to 4. The inner for loop iterates over the values of j from 0 to 2. In each iteration, the sum of i and j is printed, except when j is equal to 1 due to the continue statement. The loop prints the values 0, 1, 3, 4, 6, and 7.

Test: Loops - 1 - Question 21

What will be the output of the following code snippet?

int x = 5;
while (x > 0) {
    x--;
}
cout << x;

Detailed Solution for Test: Loops - 1 - Question 21

The while loop decrements the value of x until it becomes 0. After the loop, the value of x is printed, which is 0.

Test: Loops - 1 - Question 22

What will be the output of the following code snippet?

int x = 2;
while (x <= 10) {
    cout << x << " ";
    x += 3;
}

Detailed Solution for Test: Loops - 1 - Question 22

The while loop iterates as long as x is less than or equal to 10. In each iteration, the value of x is printed, and then it is incremented by 3. The loop prints the values 2, 5, and 8.

Test: Loops - 1 - Question 23

What will be the output of the following code snippet?

int i = 1;
do {
    cout << i << " ";
    i *= 3;
} while (i <= 10);

Detailed Solution for Test: Loops - 1 - Question 23

The do-while loop is executed as long as i is less than or equal to 10. In each iteration, the value of i is printed, and then it is multiplied by 3. The loop prints the values 1, 3, and 9.

Test: Loops - 1 - Question 24

What will be the output of the following code snippet?

int x = 5;
while (x > 0) {
    x--;
    if (x == 2)
        break;
    cout << x << " ";
}

Detailed Solution for Test: Loops - 1 - Question 24

The while loop decrements the value of x until it becomes 2. In each iteration, the value of x is printed, and then it is decremented by 1. The loop breaks when x becomes 2 due to the break statement.

Test: Loops - 1 - Question 25

What will be the output of the following code snippet?

int i = 0;
do {
    cout << i << " ";
    i++;
} while (i < 5);

Detailed Solution for Test: Loops - 1 - Question 25

The do-while loop iterates as long as i is less than 5. In each iteration, the value of i is printed, and then it is incremented by 1. The loop prints the values 0, 1, 2, 3, and 4.

Test: Loops - 1 - Question 26

What will be the output of the following code snippet?

for (int i = 1; i <= 3; i++) {
    for (int j = 1; j <= i; j++) {
        cout << i << " ";
    }
}

Detailed Solution for Test: Loops - 1 - Question 26

The outer for loop iterates over the values of i from 1 to 3. The inner for loop iterates over the values of j from 1 to i. In each iteration, the value of i is printed. The loop prints the values 1, 1, 2, 1, 2, and 3.

Test: Loops - 1 - Question 27

What will be the output of the following code snippet?

int i = 0;
while (i < 3) {
    for (int j = 0; j < 2; j++) {
        cout << i + j << " ";
        if (i + j == 2)
            break;
    }
    i++;
}

Detailed Solution for Test: Loops - 1 - Question 27

The while loop iterates as long as i is less than 3. In each iteration, the value of i is printed, and then the inner for loop iterates over the values of j from 0 to 1. The sum of i and j is printed in each inner loop iteration. The loop prints the values 0, 1, 2.

Test: Loops - 1 - Question 28

What will be the output of the following code snippet?

int x = 10;
while (x > 0) {
    x--;
    if (x % 3 == 0)
        continue;
    cout << x << " ";
}

Detailed Solution for Test: Loops - 1 - Question 28

The while loop decrements the value of x until it becomes 0. In each iteration, the value of x is printed, but if x is divisible by 3, the continue statement skips the remaining code in the current iteration. The loop prints the values 9, 8, 7, 6, 5, 4, 2, and 1.

Test: Loops - 1 - Question 29

What will be the output of the following code snippet?

int i = 0;
do {
    cout << i << " ";
    i++;
} while (i < 5);

Detailed Solution for Test: Loops - 1 - Question 29

The do-while loop iterates as long as i is less than 5. In each iteration, the value of i is printed, and then it is incremented by 1. The loop prints the values 0, 1, 2, 3, and 4.

Test: Loops - 1 - Question 30

What will be the output of the following code snippet?

int n = 0;
while (n < 5) {
    cout << n << " ";
    if (n == 2)
        break;
    n++;
}

Detailed Solution for Test: Loops - 1 - Question 30

The while loop iterates as long as n is less than 5. In each iteration, the value of n is printed, and then it is incremented by 1. The loop breaks when n becomes 2 due to the break statement. The loop prints the values 0, 1, 2, and 3.

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