C File Handling

Question 1

Which of the following true about FILE *fp

• FILE is a keyword in C for representing files and fp is a variable of FILE type.
• FILE is a structure and fp is a pointer to the structure of FILE type
• FILE is a stream
• FILE is a buffered stream

Question 2

When fopen() is not able to open a file, it returns

• EOF
• NULL
• Runtime Error
• Compiler Dependent

Question 3

getc() returns EOF when

• End of files is reached
• When getc() fails to read a character
• Both of the above
• None of the above

Question 4

In fopen(), the open mode "wx" is sometimes preferred "w" because. 1) Use of wx is more efficient. 2) If w is used, old contents of file are erased and a new empty file is created. When wx is used, fopen() returns NULL if file already exists.

• Only 1
• Only 2
• Both 1 and 2
• Neither 1 nor 2

Question 5

fseek() should be preferred over rewind() mainly because

• rewind() doesn\'t work for empty files
• rewind() may fail for large files
• In rewind, there is no way to check if the operations completed successfully
• All of the above