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Understanding Two-Dimensional Arrays

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Questions and Answers

What is the correct way to initialize a 2D array in C++ to store roll number and marks obtained by 4 students side by side?

int arr[4][2]; (correct)

int arr[8];

int arr[][] = { {1, 85}, {2, 90}, {3, 78}, {4, 92} };

int arr[2][4];

In a 2D array, what does 'r' represent?

A specific element in the array

Number of columns in the matrix

Number of rows in the matrix (correct)

Total number of elements in the array

What does the following C++ code initialize? int arr = { { 1234, 56 }, { 1256, 43 }, { 1434, 32 }, { 1312, 96 } };

A 1D array with 8 elements

A 2D array with 4 rows and 2 columns

A matrix with dimensions 1234x56, 1256x43, 1434x32, and 1312x96

It is an invalid initialization for an array (correct)

What is the correct syntax to access an element at the third row and second column in a C++ 2D array 'arr'?

arr[2][1] (D) Signup and view all the answers

What does 'c' represent in the declaration 'datatype array_name[r][c];' for a 2D array?

Number of columns in the matrix (D) Signup and view all the answers

What is the correct way to initialize a 2D array in C++ to store roll number and marks obtained by 4 students side by side?

int arr[4][2] = {{101, 85}, {102, 90}, {103, 78}, {104, 92}}; (A) Signup and view all the answers

In a C++ 2D array declaration 'datatype array_name[r][c];', what does 'r' represent?

Number of rows in the matrix (D) Signup and view all the answers

What does the following C++ code initialize?

A 2D array with elements {{1234,56},{1256,43},{1434,32},{1312,96}} (B) Signup and view all the answers

In C++, what is the correct syntax to access an element at the third row and second column in a 2D array 'arr'?

arr[2][1] (A) Signup and view all the answers

What does 'c' represent in the declaration 'datatype array_name[r][c];' for a C++ 2D array?

Number of columns in the matrix (C) Signup and view all the answers

Understanding Two-Dimensional Arrays

Choose a study mode

Podcast

Questions and Answers

What is the correct way to initialize a 2D array in C++ to store roll number and marks obtained by 4 students side by side?

In a 2D array, what does 'r' represent?

What does the following C++ code initialize? int arr = { { 1234, 56 }, { 1256, 43 }, { 1434, 32 }, { 1312, 96 } };

What is the correct syntax to access an element at the third row and second column in a C++ 2D array 'arr'?

What does 'c' represent in the declaration 'datatype array_name[r][c];' for a 2D array?

What is the correct way to initialize a 2D array in C++ to store roll number and marks obtained by 4 students side by side?

In a C++ 2D array declaration 'datatype array_name[r][c];', what does 'r' represent?

What does the following C++ code initialize?

In C++, what is the correct syntax to access an element at the third row and second column in a 2D array 'arr'?

What does 'c' represent in the declaration 'datatype array_name[r][c];' for a C++ 2D array?

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