Using switch, case, break, default!

usingswitchstatement.cpp

#include <iostream.h>

void main(void)
{
	cout << "1 - Calculate the area of a room: " << endl;
	cout << "2 - Convert age into seconds: " << endl;
	cout << "3 - Convert Celcius into farenhiet: " << endl;
	cout << "4 - Exit" << endl;
	
	int choice = 0;
	cin >> choice;
	
	switch(choice) {
		case 1:
			int width, length, area;
				cout << "Enter the width of the room: " << endl;
				cin >> width;
				
				cout << "Enter the length of the room: " << endl;
				cin >> length;
				
				area = width * length;
				cout << "The area of the room: " << area << endl;
			break;
		case 2:
               int age,  ageSeconds;
               
               cout << "Enter your age: " << endl;
               cin >> age;
               
               ageSeconds = age * 365 * 24 * 60 * 60;
               cout << "Your age in seconds: " << ageSeconds << endl;
			break;
		case 3:
             int tempC, tempF;
             cout << "Enter the temprature in C: " << endl;
             cin >> tempC;
             
             tempF = tempC * (9/5) + 32;
             cout << "Temprature in F: " << tempF << endl;
			break;
		
		case 4:
             cout << "Thanks for using this application." << endl;
			break;
		
		default:
			cout << "Enter a valid option" << endl;
	}
}