C MCQs: Error Handling- Part 2

Here is a listing of C MCQs: Error Handling along with answers, explanations and/or solutions:

1. Which of the following causes an error?
a) Trying to read a file that doesn’t exist
b) Inability to write data in a file
c) Failure to allocate memory with the help of malloc
d) All of the mentioned

2. What is the purpose of the function?
int ferror(FILE *fp)
a) They check for input errors
b) They check for output errors
c) They check for all types of errors
d) They check for error in accessing the file

3. stderr is similar to?
a) stdin
b) stdout
c) Both stdout and stdin
d) None of the mentioned

4. What happens when we use?
fprintf(stderr, “error: could not open filen”);
a) The diagnostic output is directly displayed in the output
b) The diagnostic output is pipelined to the output file
c) The line which caused error is compiled again
d) The program is immediately aborted

5. Which of the following function can be used to terminate the main function from     another function safely?
a) return(expr);
b) exit(expr);
c) abort();
d) Both b and c

6. Which of the following causes an error?
a) Trying to read a file that doesn’t exist
b) Inability to write data in a file.
c) Failure to allocate memory with the help of malloc
d) All of the menioned

7. What is the purpose of the function?
int ferror(FILE *fp)
a) They check for input errors
b) They check for output errors
c) They check for all types of errors
d) They check for error in accessing the file