x=5 is greater than 3, so the condition (x > 3) evaluates to true. The if block executes, printing 'Greater'.

When an array is passed to a function in C, it decays to a pointer pointing to the first element. This is why changes made in the function affect the original array.

p is a pointer storing the address of a. *p (dereferencing) gives the value at that address, which is 5. So both a and *p print 5.

stdio.h (Standard Input/Output header) contains declarations for printf(), scanf(), and other I/O functions.

Both 'const int x = 10;' and 'int const x = 10;' are valid ways to declare constants in C. The const keyword can appear before or after the type.

The * operator is the dereference operator that accesses the value at a memory address. The & operator gets the address of a variable.

sizeof() is a unary operator that returns the number of bytes occupied by a variable or data type in memory.

All three methods are valid. Option A initializes with size 5, option B auto-determines size from initialization, and option C declares without initialization.

malloc() returns a void pointer (void*) which can be cast to any pointer type. It returns NULL if memory allocation fails.

The free() function deallocates memory that was previously allocated using malloc(), calloc(), or realloc(). delete() is used in C++.