31. How do you declare a multidimensional array with 3 rows and 4 columns in C++? A. int arr[3][4] = {0}; B. int arr[3, 4]; C. int arr[][] = { {1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12} } D. int arr[3][4]; Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
32. What is the output of the following code: char str[10]; cout << sizeof(str); in C++? A. 9 B. 11 C. 10 D. Compilation error Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
33. Which function is used to find the first occurrence of a specified substring within a string in C++? A. strfind() B. strstr() C. substr() D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
34. What is the output of the following code: char str[] = "Hello"; cout << str[0] << str[4]; in C++? A. Undefined behavior B. Compilation error C. Ho D. ello Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
35. In C++, what is the purpose of the 'cin.getline()' function? A. Reads a character from standard input B. Reads a word from standard input C. Reads a string from standard input D. Reads a line of text from standard input Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
36. How do you declare a string object named 'text' in C++? A. string text; B. string text(); C. string text{}; D. string text = ""; Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
37. What is the correct syntax for declaring an array of 5 integers in C++? A. int arr{} = {1, 2, 3, 4, 5}; B. int[] arr = new int[5]; C. int arr[] = {1, 2, 3, 4, 5}; D. int arr[5]; Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
38. What is the purpose of the 'cin.ignore()' function in C++? A. Ignores the next character in the input buffer B. Ignores the previous character in the input buffer C. Clears the input buffer D. Reads a character from the input buffer and discards it Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
39. What is the output of the following code: char str[] = "Hello"; cout << strlen(str); in C++? A. Hello B. 5 C. Compilation error D. Runtime error Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
40. What is the correct syntax to declare a string literal in C++? A. const char* str = "Hello"; B. string str = "Hello"; C. char* str = "Hello"; D. char str[] = "Hello"; Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board