The Program in C++ to Get the Day of the Week from a given date is given below:
#include <iostream>
#include <ctime>
using namespace std;
int main() {
int day, month, year;
cout << "Enter the date (dd mm yyyy): ";
cin >> day >> month >> year;
struct tm date;
date.tm_year = year - 1900;
date.tm_mon = month - 1;
date.tm_mday = day;
date.tm_isdst = -1;
if (mktime(&date) == -1) {
cout << "Invalid date." << endl;
return 1;
}
const char *weekday[] = { "Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday" };
cout << "Day of the week: " << weekday[date.tm_wday] << endl;
return 0;
}
Output:
Enter the date (dd mm yyyy): 08
08
1999
Day of the week: Sunday
Pro-Tips💡
This program uses the mktime function to convert the given date into a tm structure, which is then used to calculate the day of the week.
The result is displayed as a string using an array of weekday names.
The user enters the date as dd mm yyyy.
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