What is the difference between 'r+' and 'w+' modes when opening a file in C?
A. 'r+' is for reading and writing, 'w+' is for reading only
B. 'r+' is for reading and writing, 'w+' is for writing only, creating a new file
C. 'r+' is for reading and writing, 'w+' is for writing only, overwriting an existing file
D. 'r+' is for reading only, 'w+' is for reading and writing, creating a new file
Answer: Option B
This Question Belongs to C Program >> File Input Output
In C, which library is used for file operations such as reading and writing files?
A. stdio.h
B. iostream.h
C. fileio.h
D. files.h
Which function is used to open a file in C for writing?
A. fopen()
B. open()
C. writefile()
D. createfile()
What does 'FILE' represent in C when working with files?
A. A built-in data type for files
B. A file descriptor
C. A file pointer
D. A file structure
How do you check if a file was opened successfully in C?
A. Use the 'filestatus' variable
B. Check the return value of fopen()
C. Use the 'fileopen' function
D. Check the file's size
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