File Handling in C++ MCQ question and answer with solution | C++ Programimg MCQs Page-4 section-1

31.
Which file mode in C++ opens a file for reading and writing, and truncates it to zero length if it exists?

A. readwrite

B. truncate

C. wplus

D. truncwrite

Answer & Solution Discuss in Board Save for Later

32.
What is the difference between fstream and ofstream in C++?

A. fstream can read and write, ofstream can only write

B. ofstream can read and write, fstream can only write

C. ofstream is used for text files, fstream is used for binary files

D. fstream is used for text files, ofstream is used for binary files

Answer & Solution Discuss in Board Save for Later

33.
How do you check if a file operation in C++ has encountered an error?

A. file.is_error()

B. file.error()

C. file.fail()

D. file.has_error()

Answer & Solution Discuss in Board Save for Later

34.
What is the purpose of the ios::binary flag in C++ file handling?

A. Opens the file in binary mode

B. Opens the file in text mode

C. Opens the file in append mode

D. Opens the file in read mode

Answer & Solution Discuss in Board Save for Later

35.
Which of the following is used to close a file in C++?

A. close()

B. closeFile()

C. fclose()

D. file.close()

Answer & Solution Discuss in Board Save for Later

36.
In C++, how do you check if a file operation has reached the end of the file?

A. file.eof()

B. eof(file)

C. file.end_of_file()

D. endOfFile(file)

Answer & Solution Discuss in Board Save for Later

37.
Which function is used to set the position of the file pointer in C++ file handling?

A. seekg()

B. seekp()

C. file.setpos()

D. setpos()

Answer & Solution Discuss in Board Save for Later

38.
How do you check if a file exists in C++ before opening it?

A. file.exists()

B. exists(file)

C. file.opened()

D. open(file)

Answer & Solution Discuss in Board Save for Later

39.
What is the purpose of the ios::trunc flag in C++ file handling?

A. Truncates the file if it exists and opens it in write mode

B. Opens the file in trunc mode

C. Opens the file in read mode

D. Opens the file in append mode

Answer & Solution Discuss in Board Save for Later

40.
Which file mode in C++ opens a file for reading and writing without truncating it if it exists?

A. readwrite

B. append

C. wplus

D. readplus

Answer & Solution Discuss in Board Save for Later

File Handling in C++ MCQ question and answer with solution | C++ Programimg MCQs

31. Which file mode in C++ opens a file for reading and writing, and truncates it to zero length if it exists?

Answer & Solution

32. What is the difference between fstream and ofstream in C++?

Answer & Solution

33. How do you check if a file operation in C++ has encountered an error?

Answer & Solution

34. What is the purpose of the ios::binary flag in C++ file handling?

Answer & Solution

35. Which of the following is used to close a file in C++?

Answer & Solution

36. In C++, how do you check if a file operation has reached the end of the file?

Answer & Solution

37. Which function is used to set the position of the file pointer in C++ file handling?

Answer & Solution

38. How do you check if a file exists in C++ before opening it?

Answer & Solution

39. What is the purpose of the ios::trunc flag in C++ file handling?

Answer & Solution

40. Which file mode in C++ opens a file for reading and writing without truncating it if it exists?

Answer & Solution

31.
Which file mode in C++ opens a file for reading and writing, and truncates it to zero length if it exists?

32.
What is the difference between fstream and ofstream in C++?

33.
How do you check if a file operation in C++ has encountered an error?

34.
What is the purpose of the ios::binary flag in C++ file handling?

35.
Which of the following is used to close a file in C++?

36.
In C++, how do you check if a file operation has reached the end of the file?

37.
Which function is used to set the position of the file pointer in C++ file handling?

38.
How do you check if a file exists in C++ before opening it?

39.
What is the purpose of the ios::trunc flag in C++ file handling?

40.
Which file mode in C++ opens a file for reading and writing without truncating it if it exists?