#include <iostream>
#include <cstdlib>
#include <string>   //for class string
#include <iomanip>   
using namespace std;

int main()
{
	const char sun {1 << 0};   //00000001
	const char mon {1 << 1};   //00000010
	const char tue {1 << 2};   //00000100
	const char wed {1 << 3};   //00001000
	const char thu {1 << 4};   //00010000
	const char fri {1 << 5};   //00100000
	const char sat {1 << 6};   //01000000

	struct restaurant {
		string name;
		char days;   //which days of the week the restaurant is open
	};

	const restaurant a[] {
		{"Mcdonald's", 	sun | mon | tue},            		//00000111 0x07
		{"Wendy's", 	sat | sun},                  		//01000001 0x41
		{"Chipotle", 	sun | mon | tue | wed | thu | fri | sat}, //01111111 0x7F
		{"Taco Bell",   mon | tue | wed},            		//00001110 0x0E
		{"Panda Express", thu | fri | sun},             	//00110001 0x31
		{"Chik-Fil-A",}
	};

	const size_t n {size(a)};   

	cout << "How many days each restaurant is open:\n\n";

	for (int i {0}; i < n; ++i) {

		int count {0};          //Count how many of the bits are turned on.

		for (int b {0}; b < 7; ++b) {
			if ((a[i].days >> b) & 0x1) {  //if bit number b is a 1
				++count;
			}
		}
		cout << left << setw(13) << a[i].name << "  " << count << "\n";
	}

	return EXIT_SUCCESS;
}