94 lines
2 KiB
C++
94 lines
2 KiB
C++
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#include<iostream>
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#include<string>
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#include<sstream>
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#include<conio.h>
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int main()
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{
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std::string input;
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short day, month, daysInMonth[] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, weekday, year;
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std::cout << "Gib das Tagesdatum ein: ";
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getline(std::cin, input);
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std::stringstream(input) >> day;
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if(day==0 || day>31)
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{
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std::cout << "\nERROR: Das eingegebene Tagesdatum existiert nicht.";
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getch();
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return(1);
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}
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std::cout << "Gib den Monat ein: ";
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getline(std::cin, input);
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std::stringstream(input) >> month;
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if(daysInMonth[month-1]<day)
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{
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std::cout << "\nERROR: Der eingegebene Monat hat keine " << day << " Tage.";
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getch();
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return(1);
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}
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if(month>12 || month==0)
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{
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std::cout << "\nERROR: Der eingegebene Tag existiert nicht.";
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getch();
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return(1);
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}
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std::cout << "Gib das jahr ein: ";
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getline(std::cin, input);
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std::stringstream(input) >> year;
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if(year>10000 || year<0)
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{
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std::cout << "\nERROR: Im eingegeben Jahr l<>sst sich der Wochentag nicht ermitteln.";
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getch();
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return(1);
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}
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if(day==29 && month==2 && (year%4!=0 || year%100==0))
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{
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std::cout << "\nERROR: Die Eingaben ben\x94tigen ein Schaltjahr.";
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getch();
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return(1);
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}
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std::cout << "\nDer " << day << "." << month << "." << year << " war ein ";
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if(month==1 || month==2) year -=1;
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switch (month)
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{
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case 1: month = 0; break;
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case 8: month = 1; break;
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case 2:
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case 6: month = 3; break;
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case 9:
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case 12: month = 4; break;
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case 4:
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case 7: month = 5; break;
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case 10: month = 6; break;
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default: month = 2; break;
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}
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weekday = (day+month+(year%100)+(year%100/4)+year/400-2*(year/100))%7;
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while(weekday<0) weekday += 7;
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switch(weekday)
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{
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case 0: std::cout << "Sonntag"; break;
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case 1: std::cout << "Montag"; break;
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case 2: std::cout << "Dienstag"; break;
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case 3: std::cout << "Mittwoch"; break;
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case 4: std::cout << "Donnerstag"; break;
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case 5: std::cout << "Freitag"; break;
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case 6: std::cout << "Samstag"; break;
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}
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getch();
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return(0);
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}
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