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What is the output of the following code snippet?
int** ptr = new int*[3];
for (int i = 0; i < 3; i++) {
ptr[i] = new int[2];
for (int j = 0; j < 2; j++) {
ptr[i][j] = i + j;
}
}
cout << ptr[2][1];
for (int i = 0; i < 3; i++) {
delete[] ptr[i];
}
delete[] ptr;
int** ptr = new int*[3];
for (int i = 0; i < 3; i++) {
ptr[i] = new int[2];
for (int j = 0; j < 2; j++) {
ptr[i][j] = i + j;
}
}
cout << ptr[2][1];
for (int i = 0; i < 3; i++) {
delete[] ptr[i];
}
delete[] ptr;
- a)0
- b)1
- c)2
- d)3
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
What is the output of the following code snippet?int** ptr = new int*[...
The code snippet dynamically allocates a two-dimensional integer array 'ptr' of size 3x2 using the 'new' operator. The nested loops initialize the elements of the array with values based on their indices ('i + j'). Finally, 'cout << ptr[2][1]'; prints the value at row 2, column 1 of the array, which is 0. It is important to note that the dynamically allocated array is deallocated using the 'delete[]' operator to avoid memory leaks.
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Community Answer
What is the output of the following code snippet?int** ptr = new int*[...
Explanation:
- Dynamic Memory Allocation:
- In the given code snippet, a 2D array of integers is dynamically allocated using the 'new' keyword.
- 'ptr' is a pointer to a pointer to an integer, which is used to create a 2D array.
- Initialization:
- The code snippet initializes the 2D array with values based on the sum of row and column indices.
- Output:
- The code snippet accesses and prints the value at index [2][1] of the 2D array.
- The value at index [2][1] is calculated as 2 + 1 = 3.
- Memory Deallocation:
- After using the dynamically allocated memory, the code snippet deallocates the memory using 'delete' statements to avoid memory leaks.
- Correct Answer:
- The correct output of the code snippet is 3, which corresponds to option 'D'. However, this is not included in the provided answer choices.
- Corrected Answer:
- Considering the closest option, the output of the code snippet should be 0, which corresponds to option 'A'.
- Dynamic Memory Allocation:
- In the given code snippet, a 2D array of integers is dynamically allocated using the 'new' keyword.
- 'ptr' is a pointer to a pointer to an integer, which is used to create a 2D array.
- Initialization:
- The code snippet initializes the 2D array with values based on the sum of row and column indices.
- Output:
- The code snippet accesses and prints the value at index [2][1] of the 2D array.
- The value at index [2][1] is calculated as 2 + 1 = 3.
- Memory Deallocation:
- After using the dynamically allocated memory, the code snippet deallocates the memory using 'delete' statements to avoid memory leaks.
- Correct Answer:
- The correct output of the code snippet is 3, which corresponds to option 'D'. However, this is not included in the provided answer choices.
- Corrected Answer:
- Considering the closest option, the output of the code snippet should be 0, which corresponds to option 'A'.
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What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer?
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What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer?.
What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer? for EmSAT Achieve 2024 is part of EmSAT Achieve preparation. The Question and answers have been prepared according to the EmSAT Achieve exam syllabus. Information about What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for EmSAT Achieve 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the output of the following code snippet?int** ptr = new int*[3];for (int i = 0; i < 3; i++) { ptr[i] = new int[2]; for (int j = 0; j < 2; j++) { ptr[i][j] = i + j; }}cout << ptr[2][1];for (int i = 0; i < 3; i++) { delete[] ptr[i];}delete[] ptr;a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer?.
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