我是编程新手，我目前正在学习 C ++ 。
例如，如果输入的year低于1583，但month和day值在范围内，则程序将显示错误消息。但是，如果year值高于1582，但month或day值超出范围，则仍会继续计算day } year。
这是我的代码
#include <iostream>
#include <cmath>
#include <cstdlib>
using namespace std;
void showOption();
bool validMonth (int month);
bool validYear (int year);
bool leapYear (int year);
bool validDay (int year, int month, int day);
void getData (int& month, int& day, int& year);
void easterDate (int& month, int& day, int& year);
int daysBetween (int month1, int day1, int month2, int day2, int year);
int dayOfYear (int day, int month, int year);
const int january = 31;
const int february = 28;
const int leapYearFeb = 29;
const int march = 31;
const int april = 30;
const int may = 31;
const int june =30;
const int july = 31;
const int august = 31;
const int september = 30;
const int october = 31;
const int november = 30;
const int decemebr = 31;
int main()
{
int option;
int day, month, year;
int easterDay, easterMonth;
int day1, day2, month1, month2;
bool repeat = false;
showOption();
cout << "please enter your option: ";
cin >> option;
cout << "" << endl;
switch (option)
{
case 1:
do
{
getData(month, day, year);
validDay(year, month, day);
if(validDay(year, month, day) == true)
{
cout << "month " << month << " day " << day << " year " << year << endl;
cout << " " << endl;
cout << "They day of the year based on the date you entered is "<< dayOfYear(day, month, year) << endl;
cout << " " << endl;
}
else
{
cout << "it is not a valid date." << endl;
}
cout << "do you still want to continue?" << endl;
cout << "0 = no. 1 = yes. ";
cin >> repeat;
cout << " " << endl;
} while(repeat);
break;
case 2:
do
{
cout << "do you still want to continue?" << endl;
cout << "0 = no. 1 = yes. ";
cin >> repeat;
} while(repeat);
break;
case 3:
do
{
cout << "do you still want to continue?" << endl;
cout << "0 = no. 1 = yes. ";
cin >> repeat;
} while(repeat);
break;
}
}
void showOption()
{
cout << " ------------------MENU------------------ " << endl;
cout << " 1) Day of the year." << endl;
cout << " 2) Date of Easter day." << endl;
cout << " 3) Number of days between 2 days entered." << endl;
cout << "" << endl;
cout << "" << endl;
}
bool validMonth (int month)
{
if (month > 0 || month < 13)
return true;
else
return false;
}
bool validYear (int year)
{
if (year > 1582)
return true;
else
return false;
}
bool leapYear (int year)
{
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
return true;
else
return false;
}
void getData (int& month, int& day, int& year)
{
cout << "enter the number of year: ";
cin >> year;
cout << "" << endl;
cout << "enter the number of month: ";
cin >> month;
cout << "" << endl;
cout << "enter the number of day: ";
cin >> day;
cout << "" << endl;
}
bool validDay (int year, int month, int day)
{
if(year > 1582)
{
if(validMonth(month))
{
if((month == 1) || (month == 3) || (month == 5) || (month == 7) || (month || 8) || (month == 10) || (month || 12))
{
if((day > 0) || (day < 32))
return true;
else
return false;
}
if((month == 4) || (month == 6) || (month == 9) || (month == 11))
{
if((day > 0) || (day < 31))
return true;
else
return false;
}
if(month == 2)
{
if((day > 0) || (day < 29))
return true;
else
return false;
}
if((leapYear(year)))
{
if((month == 2) && ((day > 0) || (day < 30)))
return true;
else
return false;
}
}
}
}
int dayOfYear (int day, int month, int year)
{
int dayTotal = 0;
if(validDay(year, month, day))
{
if(month == 1)
{
dayTotal = 0 + day;
}
if(month == 2)
{
dayTotal = january + day;
}
if((month == 3) && (year > 1582))
{
dayTotal = january + february + day;
if((month == 3) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + day;
}
}
if((month == 4) && (year > 1582))
{
dayTotal = january + february + march + day;
if((month == 4) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + day;
}
}
if((month == 5) && (year > 1582))
{
dayTotal = january + february + march + april + day;
if((month == 5) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + day;
}
}
if((month == 6) && (year > 1582))
{
dayTotal = january + february + march + april + may + day;
if((month == 6) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + day;
}
}
if((month == 7) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + day;
if((month == 7) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + day;
}
}
if((month == 8) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + july + day;
if((month == 8) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + july + day;
}
}
if((month == 9) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + july + august
+ day;
if((month == 9) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + july + august
+ day;
}
}
if((month == 10) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + july + august
+ september + day;
if((month == 10) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + july + august
+ september + day;
}
}
if((month == 11) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + july + august
+ september + october + day;
if((month == 11) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + july + august
+ september + october + day;
}
}
if((month == 12) && (year > 1582))
{
dayTotal = january + february + march + april + may + june + july + august
+ september + october + november + day;
if((month == 5) && (year > 1582) && (leapYear(year)))
{
dayTotal = january + leapYearFeb + march + april + may + june + july + august
+ september + october + november + day;
}
}
}
return dayTotal;
}
它编译但输出不正确。
我需要帮助并想知道是否有人可以查看我的代码并告诉我它有什么问题？
注意：我已经在这段代码中工作了2天，我无法弄清楚我做错了什么。我非常感谢您的帮助和反馈。非常感谢你