// Bjarne Stroustrup 3/22/2009
// Chapter 3 Exercise 4

#include "std_lib_facilities.h"	
// note that different compilers/SDEs keep header files in different places
// so that you may have to use "../std_lib_facilities.h" or "../../std_lib_facilities.h"
// the ../ notation means "look one directly/folder up from the current directory/folder"

int main()
try
{
	int val1 = 0;
	int val2 = 0;
	cout << "Please enter two integer values separated by a space: ";
	cin >> val1 >> val2;
	if (!cin) error("something went bad with the read");
	cout << "values : " << val1 << " " << val2 << '\n';

	if (val1<val2) cout << val1 << " is smallest\n";
	if (val2<val1) cout << val2 << " is smallest\n";
	if (val1==val2) cout << val1 << " and " << val2 << " are equal\n"; // I "forgot" to ask for that possibility

	cout << "sum : " << val1+val2 << '\n';
	cout << "product : " << val1*val2 << '\n';
	if (val2==0)
		cout << "good try! but I don't divide by zero\n";
	else
		cout << "ratio (val1/val2): " << val1/val2 << '\n';	// note that this is integer division so 5/2 is 2 (not 2.5)

	// some more tests:
	if (val1<0) cout << val1 << " is negative\n";
	cout << "difference (val1-val2) : " << val1-val2 << '\n';
	if (val2!=0) cout << "remainder (val1%val2) : " << val1%val2 << '\n';
	cout << "square(val1) : " << val1*val1 << '\n';

	keep_window_open();	// For some Windows(tm) setups
}
catch (runtime_error e) {	// this code is to produceerror messages; it will be described in Chapter 5
	cout << e.what() << '\n';
	keep_window_open("~");	// For some Windows(tm) setups
}

/*

	How would you test this?
	First try some sensible numbers
		1 2
		99999 44
		-23 9
	etc.

	When that gets boring try to see if you can break the code by giving
	"bad" input:
		0 0
		-123456789 987654321
		one two
	Etc.
*/