84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
#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 lässt 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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if(month==1) month = 0;
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else if(month==8) month = 1;
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else if(month==2 || month==6) month = 3;
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else if(month==9 || month==12) month = 4;
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else if(month==4 || month==7) month = 5;
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else if(month == 10) month = 6;
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else month = 2;
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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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if(weekday==0) std::cout << "Sonntag";
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else if(weekday==1) std::cout << "Montag";
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else if(weekday==2) std::cout << "Dienstag";
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else if(weekday==3) std::cout << "Mittwoch";
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else if(weekday==4) std::cout << "Donnerstag";
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else if(weekday==5) std::cout << "Freitag";
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else std::cout << "Samstag";
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getch();
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return(0);
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}
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