Answer to Question #167717 in C++ for arianna318

Question

Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90.

Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also indicate if the (primary) highway runs north/south or east/west.

Ex: If the input is:

90

the output is:

I-90 is primary, going east/west.

Ex: If the input is:

290

the output is:

I-290 is auxiliary, serving I-90, going east/west.

Ex: If the input is:

0

the output is:

0 is not a valid interstate highway number.

Answer 1

#include <iostream>


using namespace std;


int main()
{
	int way;
	cout << "Enter number of highway: ";
	cin >> way;
	if (way >= 1 && way <= 99)
	{
		if (way % 2 == 0) cout << "I-" << way << " is primary, going east/west." << endl;
		else cout << "I-" << way << " is primary, going north/south." << endl;
		return 0;
	}
	if ((way >= 100 && way <= 999))
	{
		cout << "I-" << way << " is auxiliary, serving I-" << way%100 << (((way%100)%2 == 0) ? " going east/west." : " going north/south.") << endl;
		return 0;
	}
	cout << "You enter wrong highway!" << endl;
	return 0;
}