C++ Do-While Loop

Example 1

#include <iostream>
using namespace std;

int main()
{
	int count=0;
	double num, total = 0, average;
	cout << "This program add the numbers you add."
		<< "\n Enter 0 to exit and show average.";
	do
	{
		cout << "\nEnter a number : ";
		cin >> num;
		if (num == 0)
			break;
		count++;
		total = total + num;
		cout << "\nThe total is : " << total;
		
	} while (true);
	average = total / count;
	cout << "The total is : " << total 
		<< ". The average is : " << average;
	return 0;
}

 

Example 2

#include <iostream>
using namespace std;

int main()
{
	int opt;
	do
	{
		cout << "\nMain Menu"
			<< "\n========="
			<< "\n1. Calculator"
			<< "\n2. Temp Converter"
			<< "\n3. Exit"
			<< "\nEnter your option:";
		cin >> opt;
		switch (opt)
		{
		case 1:
			cout << "Opening calculator application";
			break;
		case 2:
			cout << "Opening Temp Converter application";
			break;
		case 3:
			cout << "Exiting program";
			exit(0);
			break;
		default:
			cout << "Invalid option";
			break;
		}

	} while (true);
	return 0;
}