C/C++ Questions

* why n++ executes faster than n+1?

* what is a modulus operator? What are the restrictions of a modulus operator?

* What is the difference between a string and an array?

* Is it better to use a pointer to navigate an array of values,or is it better to use a subscripted array name?

* Can the sizeof operator be used to tell the size of an array passed to a function?

* Is using exit() the same as using return?

* Is it possible to execute code even after the program exits the main() function?

* What is a static function?

* Why should I prototype a function?

* How do you print an address?

* Can math operations be performed on a void pointer?

* How can you determine the size of an allocated portion of memory?

* What is a null pointer assignment error? What are bus errors, memory faults, and core dumps?

* What is the difference between NULL and NUL?

* What is the heap?

* Can the size of an array be declared at runtime?

* What is the stack?

* When should a far pointer be used?

* What is the difference between far and near?

* Is it better to use malloc() or calloc()?

* Why should we assign NULL to the elements (pointer) after freeing them?

* When would you use a pointer to a function?

* How do you use a pointer to a function?

* Can you add pointers together? Why would you?

* What does it mean when a pointer is used in an if statement?

* Is NULL always defined as 0?

* What is a void pointer?

* What is a null pointer?

* How many levels of pointers can you have?

* What is indirection?

* How do you print only part of a string?

* How can I convert a string to a number?

* How can I convert a number to a string?

* What is the difference between a string copy (strcpy) and a memory copy (memcpy)? When should each be used?

* How can you check to see whether a symbol is defined?

* How do you override a defined macro?

* What is #line used for?

* What is a pragma?

* What are the standard predefined macros?

* How can type-insensitive macros be created?

* How many levels deep can include files be nested?

* Can include files be nested?

* Can you define which header file to include at compile time?

* What is the difference between #include and #include file ?

* Is it better to use a macro or a function?

* How are portions of a program disabled in demo versions?

* What is the benefit of using an enum rather than a #define constant?

* What is the benefit of using #define to declare a constant?

* Can a file other than a .h file be included with #include?

* How can you avoid including a header more than once?

* What will the preprocessor do for a program?

* What is a macro, and how do you use it?

* What is Preprocessor?

* How can I make sure that my program is the only one accessing a file?

* How can I open a file so that other programs can update it at the same time?

* How do you determine whether to use a stream function or a low-level function?