1 #include #include 2 3 4 using namespace std; 5 6 7 8 1/Returns the null pointer int* return_null_pointer() { // Your code starts here 9 10 11 // Your code ends here 12 } 13 14 15 // Returns the value stored in x int return_value(int* x) { // Your code starts here 16 17 18 19 // Your code ends here 20 } 21 22 23 24 25 26 27 28 //Returns the memory address of x int return_address(int &x) { // Your code starts here // Your code ends here } 29 30 31 32 33 34 //Returns the memory size of a variable of type char int return_size_of_char() { // Your code starts here 35 // Your code ends here 3 36 37 38 39 40 //Returns the memory size of a variable of type int int return_size_of_into { // Your code starts here 41 42 43 // Your code ends here