Question

Make a program in c++ that determine what day(sunday-saturday) is that particular date you input. Example Input: July 18, 2017 , Output: Tuesday

Answer 1

#include<iostream>

using namespace std;

//function to get date and return weekday number [0-6]

int getWeekDay(int yy, int mm, int dd)

{

//formula to get weekday number

int rst =   

dd

+ ((153 * (mm + 12 * ((14 - mm) / 12) - 3) + 2) / 5)

+ (365 * (yy + 4800 - ((14 - mm) / 12)))

+ ((yy + 4800 - ((14 - mm) / 12)) / 4)

- ((yy + 4800 - ((14 - mm) / 12)) / 100)

+ ((yy + 4800 - ((14 - mm) / 12)) / 400)

- 32045;

return (rst+1)%7 ;

}

string getMonth(String month){

switch(month) {

case 'January' :

return month = 1

break;

case 'Febuary' :

return month = 2

break;

case 'march' :

return month = 3

break;

case 'April' :

return month = 4

break;

case 'May' :

return month = 5

break;

case 'June' :

return month = 6

break;

case 'July' :

return month = 7

break;

case 'August' :

return month = 8

break;

case 'September' :

return month = 9

break;

case 'October' :

return month = 10

break;

case 'November' :

return month = 11

break;

case 'December' :

return month = 12

break;

default :

cout << "Invalid month" << endl;

}

}

//main program/code

int main()

{

//declaring array of weekdays`

const char *Names[] = {"Sunday","Monday", "Tuesday","Wednesday", "Thursday", "Friday", "Saturday"};

int day = 0;

String DATE;

cin>>DATE;

vector<string> sep = split(DATE, ' ');

char month = sep[0];

char Date = sep[1];

char year = sep[2];

while(std::getline(Date,token,',')){

Date = token

}

month= getMonth(month)

//calling function, storing weekday number in day

day= getWeekDay(year,month,Date);

//printing the weekday from given array

cout<<"Day : "<< day <<endl;

return 0;

}