Tricky C Interview Questions

[Kalyan]

Tricky C Interview Questions

   1. How do you write a program which produces its own source code as its output?

   2. How can I find the day of the week given the date?

   3. Why doesn't C have nested functions?

   4. What is the most efficient way to count the number of bits which are set in a value?

   5. How can I convert integers to binary or hexadecimal?

   6. How can I call a function, given its name as a string?

   7. How do I access command-line arguments?

   8. How can I return multiple values from a function?

   9. How can I invoke another program from within a C program?

  10. How can I access memory located at a certain address?

  11. How can I allocate arrays or structures bigger than 64K?

  12. How can I find out how much memory is available?

  13. How can I read a directory in a C program?

  14. How can I increase the allowable number of simultaneously open files?

  15. What's wrong with the call fopen("c:\newdir\file.dat", "r")?