Question

8. Given: struct STACK INF RC 1301 int top that the following functions have already been declared in a stack tolkit and are available for create stack(s) push(s, item) pop(s, item) topls, item) empty(s) Boolean function use some or all of them to write the complete definition code for a function that passes in a stack (as an argument), removes the SECOND assume that there are at least two items in the stack). item (from the top) in the stack, and returns it (as an argumen). You may Example: 7 ←top of stack returns:8 10 points Write the required statements to declare a variable of type double with a value of 12.818, declare a pointer variable that can hold the address of a double, assign the address of the double variable to the pointer variable, and print out the value of the double variable through the use of the pointer variable. 9. a. Write the statements required to: declare a pointer variable that can hold the address of a dow dynamically allocate memory to hold a double and assign the address of this area to the pointer var the value: 13.241 in the allocated memory area, print out the stored value, deallocate the me

Answer 1

8.

secondItem(s,item ) // s= STACK and item = argument to hold the second item(from top of the stack)

{

pop(s,item1); // pop the top item from stack s to item1

pop(s,item); // pops the second item from top of stack to item

push(s,item1); // push the item1 to top of stack

// item will contain the second item from top of the stack

}

9(a)

C++ statements :

double a=12.818;
double *a_ptr;
a_ptr = &a;
cout<<*(a_ptr);

9(b)

C++ statements:

double *a;
double *a_ptr = new double;
a = &a_ptr;
*a_ptr = 13.241;
cout<<*a_ptr;
delete a_ptr;