Arrays And Strings In C Plus Plus — Part 1 MCQs with Explanations

int arr[size] is the correct answer to “What is the correct way to declare a one-dimensional array in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

arr[2] is the correct answer to “How do you access the third element of an array named 'arr' in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

10 is the correct answer to “What is the size of the following array declaration in C++: char str[10];”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Returns the length of a null-terminated string is the correct answer to “What is the purpose of the 'strlen()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

for (int i = 0; i < size; ++i) { arr[i] = 0; } is the correct answer to “How do you initialize all elements of an integer array named 'arr' to zero in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

int arr[rowSize][colSize] is the correct answer to “What is the correct syntax for declaring a two-dimensional array in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

They are represented as arrays of characters terminated by a null character is the correct answer to “Which of the following statements is true about C-style strings in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Undefined behavior is the correct answer to “What is the output of the following code: char str[] = "Hello"; cout << str[5]; in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Using the 'strlen()' function is the correct answer to “How do you determine the length of a C-style string in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Using a pointer to the array is the correct answer to “What is the correct way to pass an array as an argument to a function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Copies one string to another is the correct answer to “What does the 'strcpy()' function do in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

6 is the correct answer to “What is the output of the following code: char str[] = "Hello"; cout << sizeof(str); in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

string str = "Hello" is the correct answer to “What is the correct way to initialize a string object named 'str' in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Concatenates two strings is the correct answer to “What is the purpose of the 'strcat()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Hello is the correct answer to “What is the output of the following code: char str[] = "Hello"; cout << str; in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}} is the correct answer to “Which of the following correctly initializes a two-dimensional array named matrix in C++ with dimensions 3x3”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Undefined behavior is the correct answer to “What is the output of the following code snippet in C++? int arr[] = {1, 2, 3, 4, 5}; cout << arr[5];”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

string name = "John" is the correct answer to “Which of the following correctly defines a string variable named name initialized with the value "John" in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Compares two C-style strings is the correct answer to “What is the purpose of the 'strcmp()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

int arr[10] = {0} is the correct answer to “Which of the following correctly declares an array of 10 integers in C++ and initializes all elements to zero”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

o is the correct answer to “What is the output of the following code snippet in C++? char str[] = "Hello"; cout << str[4];”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

getline(cin, str) is the correct answer to “In C++, which function is used to read a string with spaces using cin”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

text[4] is the correct answer to “What is the correct way to access the fifth character in a string variable named text in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Converts a character to uppercase is the correct answer to “What is the purpose of the 'toupper()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

6 is the correct answer to “What is the output of the following code snippet in C++? char str[] = "Hello"; cout << sizeof(str);”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

string myString = "Welcome" is the correct answer to “What is the correct way to declare a string object named myString and initialize it with the value "Welcome" in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Copies a specified number of characters from one string to another is the correct answer to “What does the 'strncpy()' function do in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Tokenizes a string based on a delimiter is the correct answer to “What is the purpose of the 'strtok()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Array indices start from 0 is the correct answer to “Which of the following statements is true about array indices in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

arr[size - 1] is the correct answer to “What is the correct way to access the last element of an array named arr in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

int arr[3][4] is the correct answer to “How do you declare a multidimensional array with 3 rows and 4 columns in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

10 is the correct answer to “What is the output of the following code: char str[10]; cout << sizeof(str); in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

strstr() is the correct answer to “Which function is used to find the first occurrence of a specified substring within a string in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Ho is the correct answer to “What is the output of the following code: char str[] = "Hello"; cout << str[0] << str[4]; in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Reads a line of text from standard input is the correct answer to “In C++, what is the purpose of the 'cin.getline()' function”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

string text is the correct answer to “How do you declare a string object named 'text' in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

int arr[5] is the correct answer to “What is the correct syntax for declaring an array of 5 integers in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

Clears the input buffer is the correct answer to “What is the purpose of the 'cin.ignore()' function in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

5 is the correct answer to “What is the output of the following code: char str[] = "Hello"; cout << strlen(str); in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.

const char* str = "Hello" is the correct answer to “What is the correct syntax to declare a string literal in C++”. This question is standard in competitive examination syllabi for Arrays And Strings In C Plus Plus.