Answer to Question #343278 in C++ for nana

Question

Create a program that will ask the user to input Month Day and Year, the program will output the day and the date.

Sample Output:

Month: 5

Day:  20

Year: 2022

Friday, May, 20, 2022

Answer 1

#include<iostream>
#include<cstring>
using namespace std;
int day_of_week(int d, int m, int y)        // by formula
{
  int t[] = {6, 2, 1, 4, 6, 2, 4, 0, 3, 5, 1, 3};
  if(m<3) y--;
  return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7;    //returns the number 0-6 (Monday-Sunday)
}
int main(){
    const string DAY_NAMES[7] = {"Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"};
    const string MONTH_NAMES[12] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
    
    int day, month, year;
    
    cout<<"Enter the date(1-31): ";
    cin>>day;
    cout<<"Enter the month(1-12): ";
    cin>>month;
    cout<<"Enter the year(yyyy): ";
    cin>>year;


    cout<<DAY_NAMES[ day_of_week(day,month,year) ]<<", "<<MONTH_NAMES[month-1]<<", "<<year<<endl;
    
    return 0;
}