1942번 c++

#include <iostream>

using namespace std;

class calendar {

private:

int datenum[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

string ansmonth[7] = { "SUN", "MON", "TUE", "WED", "THU" , "FRI", "SAT" };

int month;

int date;

int sumofdays;

public:

void setDate() {

cin >> month >> date;

sumofdays = 0;

}

void coutdays() {

while (month > 1) {

month -= 1;

sumofdays += datenum[month - 1];

}

sumofdays += date;

}

void printdate() const{

switch (sumofdays % 7) {

case 0:

cout << "SUN";

break;

case 1:

cout << "MON";

break;

case 2:

cout << "TUE";

break;

case 3:

cout << "WED";

break;

case 4:

cout << "THU";

break;

case 5:

cout << "FRI";

break;

case 6:

cout << "SAT";

break;

}

}

};

int main(void) {

calendar c;

c.setDate();

c.coutdays();

c.printdate();

}