cpp7.6

7.6

#include<iostream>
const int ArSize = 8;
int sum_arr(int arr[], int n);

int main()
{
	int cookies[ArSize] = { 1,2,4,8,16,32,64,128 };
	std::cout << cookies << " = array address, ";

	std::cout << sizeof cookies << " = sizeof cookies\n";
	int sum = sum_arr(cookies, ArSize);
	std::cout << "Total cookies eaten: " << sum << std::endl;
	sum = sum_arr(cookies, 3);
	std::cout << "First there eaters ate " << sum << " cookies.\n";
	sum = sum_arr(cookies + 4, 4);
	std::cout << "Last four eaters ate " << sum << " cookies.\n";
	system("pause");
	return 0;
}

int sum_arr(int arr[], int n)
{
	int total = 0;
	std::cout << arr << " =arr, ";
	std::cout << sizeof arr << " =sizeof arr\n";
	for (int i = 0; i < n; i++)
		total = total + arr[i];
	return total;
}

7.7

#include<iostream>
const int Max = 5;
int fill_array(double ar[], int limit);
void show_array(const double ar[], int n);
void revalue(double r, double ar[], int n);

int main()
{
	using namespace std;
	double properties[Max];

	int size = fill_array(properties, Max);
	show_array(properties, size);
	if (size > 0)
	{
		cout << "Enter revaluation factor: ";
		double factor;
		while (!(cin >> factor))
		{
			cin.clear();
			while (cin.get() != '\n')
				continue;
			cout << "Bad inputl; please enter a number: ";

		}
		revalue(factor, properties, size);
		show_array(properties, size);

	}
	cout << "Done.\n";
	cin.get();
	cin.get();
	system("pause");
	return 0;
}
int fill_array(double ar[], int limit)
{
	using namespace std;
	double temp;
	int i;
	for (i = 0; i < limit; i++)
	{
		cout << "Enter value #" << (i + 1) << ": ";
		cin >> temp;
		if (!cin)
		{
			cin.clear();
			while (cin.get() != '\n')
				continue;
			cout << "Bad input; input process terminated.\n";
			break;
		}
		else if (temp < 0)
			break;
		ar[i] = temp;
	}
	return i;
}

void show_array(const double ar[], int n)
{
	using namespace std;
	for (int i = 0; i < n; i++)
	{
		cout << "Property #" << (i + 1) << ": $";
		cout << ar[i] << endl;
	}
}
void revalue(double r, double ar[], int n)
{
	for (int i = 0; i < n; i++)
		ar[i] *= r;
	
}