6. What is the purpose of the C function?
   

   int ferror(FILE *fp)
   

1. 1. They check for output errors

   
   
   

   2. They check for all types of errors

   
   
   

   3. They check for error in accessing the file

   
   
   

   4. They check for input errors

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   They check for output errors

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7. Which of the following causes an error?
   

1. 1. Failure to allocate memory with the help of malloc

   
   
   

   2. Inability to write data in a file

   
   
   

   3. Trying to read a file that doesn’t exist

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Option A, B and C causes an error.

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8. Which of the following function can be used to terminate the main function from another function safely?
   

1. 1. exit(expr);

   
   
   

   2. abort();

   
   
   

   3. both exit(expr); and abort();

   
   
   

   4. return(expr);

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   exit(expr);

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9. What happens when we use the following C statement?
   

   fprintf(stderr, "error: could not open file");
   

1. 1. The diagnostic output is pipelined to the output file

   
   
   

   2. The program is immediately aborted

   
   
   

   3. The diagnostic output is directly displayed in the output

   
   
   

   4. The line which caused error is compiled again

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   The diagnostic output is directly displayed in the output

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10. stderr is similar to?
    

1. 1. stdout

   
   
   

   2. stdin

   
   
   

   3. both stdin and stdout

   
   
   

   4. scanf

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   stdin

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