こんにちは、誰かが私が間違っていることを手伝ってくれることを願っています。これは私が指摘する宿題ですが、私が間違っていることが何であるかを理解していないので、私がなんてバカなのか誰かに教えてもらう必要がありました.
ユーザーが月、日、年を入力して、それが魔法の日付かどうかを判断できるようにすることになっています。その部分は、別のプロジェクトですでに行っていました。戻って、isDateValid という名前の関数を使用して日付を検証することになっています。明らかな何かが欠けていると確信しており、この件について誰の助けも借りることができます。ありがとう！
問題は、私がそれを実行すると、それが無効な日付であることが常に得られることです!
#include <iostream>
using namespace std;
bool leapYear(int);
bool isDateValid(int, int, int);
int main()
{
int month, day, year;
cout << "Is the date you are thinking of a magic one? Let's see...\n";
cout << "What is the month in numeric form only? "; cin >> month;
cout << "What is the day of the month? "; cin >> day;
cout << "What is the four digit year? "; cin >> year;
if (isDateValid(month, day, year) == false)
{
cout << "The date you entered, "<< month << "/" << day << "/" <<
year << " is NOT a VALID Date.\n";
cout << "If you think I am wrong, please feel free to run me again";
}
else if (month * day == year % 100) // if true then do this
{
cout << "The date you entered, " <<
month << "/" << day << "/" << year << " is a magic date!!\n";
}
else // if false then do this
{
cout << "The date you entered, " << month << "/" << day << "/" <<
year << " is NOT a magic date!!\n";
}
//Program ID
cout <<"\n" << "L5P1LB.cpp\n" << "11-26-12\n" << endl;
system ("pause");
return 0;
}//end main
// isDateValid function to validate date entered
bool isDateValid(int month, int day, int year)
{
bool validation = true;
if(!(year >= 1600 && year <=2100))
validation = false;
if(leapYear(year))
{
if ((month == 2) && (day > 29))
validation = false;
}
else if(!leapYear(year))
{
if ((month == 2) && (day > 28))
validation = false;
}
if((month < 1 && month > 12) || (day < 1))
validation = false;
if((month == 1) || (month ==3) || (month == 5) || (month == 7) ||
(month == 8) || (month == 10) || (month == 12) && (day > 31))
validation = false;
else if (((month == 4) || (month == 6) || (month == 9) || (month == 11)) &&
(day > 30))
validation = false;
else
validation == true;
return validation;
}
// leapYear function to determine if the year is a leap year for validation
bool leapYear(int year)
{
return(year % 100 != 0 && year % 4 == 0) || (year % 400 == 0);
} // end leapYear
編集
さて、私の問題は、それが有効な日付ではないことに気付いていないことです。検証をすべてスキップして、その「魔法の日付」部分を実行するだけです!
ここに書き直したものと、Bloodshed にあるように適切にインデントされていることを願っている私の完全なコードがあります。
Description: This program determines if when the user enters a month,
day, and four digit year which will then be stripped down to its
two digit year and determined to be a magic date if the day entered
multiplied by the month entered equals the years two digit format.
Design:
begin main
input data
Ask user for a month in number form
Ask user for a day of the month
Ask user for four digit month
Validate
begin isDateValid
if year is between 1600 and 2100, inclusive then return
true
if month is between 1 and 12, inclusive return true
if month is Jan, Mar, May, July, Aug, Oct, Dec
then if day is between 1 and 31 inclusive return true
if month is Apr, June, Sept, Nov
then if day is between 1 and 30 inclusive return true
if month is Feb
then determine if leap year by running function
leapYear provided for us.
if leap year is true
then if day is between 1 and 29, inclusive return true
if not leap year then if day is between 1 and 28,
inclusive then return true
end isDateValid
if isDateValid is true then
Calculate
if the month times the year is equal to the year modulus 100
then output it is a magic date
if it does not equal the year in 2 digit form
then output that it is not a magic date
else output error message
Output Program ID
end main
The output needs to include the books data of 6/10/1960 */
#include <iostream>
using namespace std;
bool leapYear(int);
bool isDateValid(int, int, int);
int main()
{
int month, day, year;
cout << "Is the date you are thinking of a magic one? Let's see...\n";
cout << "What is the month in numeric form only? "; cin >> month;
cout << "What is the day of the month? "; cin >> day;
cout << "What is the four digit year? "; cin >> year;
if (isDateValid(month, day, year) == false)
{
cout << "The date you entered, "<< month << "/" << day << "/" <<
year << " is NOT a VALID Date.\n";
cout << "If you think I am wrong, please feel free to run me again";
}
else if (month * day == year % 100) // if true then do this
{
cout << "The date you entered, " <<
month << "/" << day << "/" << year << " is a magic date!!\n";
}
else // if false then do this
{
cout << "The date you entered, " << month << "/" << day << "/" <<
year << " is NOT a magic date!!\n";
}
//Program ID
cout <<"\n" << "L5P1LB.cpp\n" << "11-26-12\n" << endl;
system ("pause");
return 0;
} //end main
// isDateValid function to validate date entered
bool isDateValid(int month, int day, int year)
{
bool validation = true; // validation set to true
// if it is not between 1600 and 2100 then set to false
if(!(year >= 1600 && year <=2100))
validation = false;
// call leapYear function
if(leapYear(year))
{
// if February and day is greater than 29 then set to false
if ((month == 2) && (day > 29))
validation = false;
}
// else if NOT leapYear
else if(!leapYear(year))
{
// if February and day is greater then 28 then set to false
if ((month == 2) && (day > 28))
validation = false;
}
// if month is less then 1 and over 12 then set to false
if((month < 1 && month > 12))
validation = false;
// if day is less then 1 then set to false
if(day < 1)
validation = false;
// if month is 1 (Jan), 3 (Mar), 5 (May), 7 (July), 8 (Aug), 10 (Oct),
// or 12 (Dec) and day is greater then 31 set to false
if((month == 1) || (month ==3) || (month == 5) || (month == 7) ||
(month == 8) || (month == 10) || (month == 12) && (day > 31))
validation = false;
// if month is 4 (Apr), 6 (June), 9 (Sept), or 11 (Nov) and day is
// greater then 30 set to false
if (((month == 4) || (month == 6) || (month == 9) || (month == 11)) &&
(day > 30))
validation = false;
// else everything that is left set validation to true
else
validation = true;
return validation;
} // End isDateValid
// leapYear function to determine if the year is a leap year for validation
bool leapYear(int year)
{
return(year % 100 != 0 && year % 4 == 0) || (year % 400 == 0);
} // end leapYear
場所とか間違ってたらごめんなさい！
また、ご協力いただきありがとうございます。本当に感謝しています。