/* Lab 7 start
 * IMPORTANT:  For lab 7, remember to build this with -g
 * g++ lab7.cpp -g
 * Then:
 * gdb a.out
 */
#include<iostream>
using namespace std;

void q5func(int antelope){
	int gorilla = antelope * antelope;
	cout << "q5func is printing " << gorilla << endl;
	// Put your breakpoint here
}

int main(){

	/* Question 1:
	 * 	Break the program on the line that assigns a value to c
	 * 	Then print out the values of a, b, and c
	 * 	After that, run next, and print the value of c again (it should change)
	 * 	Put the values in your lab report
	 */
	int a, b, c;
	cout << "Enter a number:  ";
	cin >> a;
	b = a * 2;
	c = a * a; // Break the program on this line

	/* Question 2:
	 * 	This loop will calculate the sum of the array
	 * 	Put a breakpoint into the loop
	 * 	Then add a display for i, sum, and array[i]
	 * 	Enter next repeatedly to watch the loop run
	 * 	Note that you can push up arrow to get back the last command, so 
	 * 		when running next repeatedly, just do uparrow, enter, uparrow, enter, etc.
	 * 	Add the final value of sum to your lab report
	 */
	int array[] = {5, 2, 10, 300, 26, 5};
	int sum = 0;
	for(int i = 0; i < 6; i++)
		sum += array[i]; // Set a breakpoint on this line
	
	/* Question 3:
	 * 	This loop calculates 10 factorial, usually stated 10!
	 * 	Set a breakpoint on the line indicated below 
	 * 	Set i to 12:  set (i=12)
	 * 	Disable breakpoints:  disable breakpoints
	 * 	Continue, then quickly press ctrl+c to stop the program
	 * 	print out i.
	 * 	Question for your lab report:  What was i?
	 * 	If you did it right, i should be a large number.  Why is it so large?
	 */
	long int result = 1;
	for(size_t i = 1; i != 11; i++)
		result *= i; // Set a breakpoint on this line
	cout << "10! is " << result << endl;

	/* Question 4:
	 * 	This causes a segmentation fault!
	 * 	place_for_array is a pointer, it doesn't point anywhere
	 * 	It *could* point to an array, though.
	 * 	Just run the program with this uncommented, and it'll here all on its own
	 * 	Then print out place_for_array
	 * 	Question for your lab report:  What was the value of place_for_array?
	 * 	Add the line below that sets place_for_array to array + 3
	 * 	Then set a breakpoint on the cout line below.
	 * 	For the lab report:  Post-fix, what is the value of place_for_array?
	 */

	int *place_for_array = 0;
	// Uncomment the following and see what happens
	// place_for_array = array + 3;
	cout << place_for_array[0] << endl; // After you fix it, put a breakpoint here
	

	/* Question 5:
	 * 	This time we'll use the stack
	 * 	Put a breakpoint in the function q5func.
	 * 	Once the program is stopped, print out gorilla and &gorilla (address of gorilla)
	 * 	Run backtrace or bt, and see that you're in a function
	 * 	Run up, and you'll move up the stack to main
	 * 	In main, print out &a, &b, &c, &result, and &sum.  For the report, which is smallest?
	 * 	What is the difference between the smallest address above, and &gorilla?
	 * 	Feel free to use a calculator in hex mode to calculate the above
	 * 	The result above is about the amount of memory required for a stack frame
	 */
	q5func(9137);
			
	return 0;
}