C Interview Questions - 5

• Are expressions arr and *arr same for array of integers?
• Are variables argc and argv are local to main?
• Bitwise operator for checking whether particular bit is on or off?
• Bitwise operator for putting on particular bit in number?
• Bitwise operator for turning off particular bit in number?
• Can Structure contain Pointer to itself?
• Can there be at least some solution to determine number of arguments passed to variable argument list function?
• Can we specify variable field width in scanf() format string? If possible how?
• Can you dynamically allocate arrays in expanded memory?
• Can you use function fprintf() to display output on screen?
• Can you write function similar to printf()?
• Describe about storage allocation and scope of global, extern, static, local and register variables?
• Difference : Strings and Arrays?
• Difference : Structure and Unions?
• Difference : arrays and linked list?
• Difference : enumeration and set of pre-processor # defines?
• Difference : functions memmove() and memcpy()?
• Difference : functions rand(), random(), srand() and randomize()?
• Difference : main() in C and main() in C++?
• Difference : pass by reference and pass by value?
• Difference : strdup and strcpy?
• Differentiate between for loop and while loop? it uses?
• Does mentioning array name gives base address in all contexts?
• Does there exist any other function that can be used to convert integer or float to string?
• Does there exist any way to make command line arguments available to other functions without passing them as arguments to function?
• Explain one method to process entire string as one unit?
• How are Structure passing and returning implemented by complier?