Which wrong?when i key-in 2/29/2000 display two 1-valid 2nd-invalid somealso display 1-valid 2nd-invalid
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
int month, day, year;
cout << "Month (January to December)-";
cin >> month;
cout << "Day(1 to 31)";
cin >> day;
cout << "Year( 1990 to 2009)";
cin >> year;
if(cin.fail()) // check input for bad datatype
{
cout << "That's not an valid entry! " << endl;
}
if (month == 2 && day == 29 && (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)))
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 2 && day == 29 && (year % 4 != 0) && ((year % 100 == 0) || (year % 400 != 0)))
{
cout << "The date " << month << "-" << day << "-" << year << " is NOT valid. LEAP YEAR!" << endl;
}
if (month == 1 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 2 && day <= 28)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 3 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 4 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 5 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 6 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 7 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 8 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 9 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 10 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 11 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 12 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
else if ( month == 4 || 6 || 9 || 11 )
{
cout << "THE DATE" " "" < "<< day << "-" << month << "-" << year << ">" "is invalid";
}
return 0;
}
#include <iomanip>
using namespace std;
int main()
{
int month, day, year;
cout << "Month (January to December)-";
cin >> month;
cout << "Day(1 to 31)";
cin >> day;
cout << "Year( 1990 to 2009)";
cin >> year;
if(cin.fail()) // check input for bad datatype
{
cout << "That's not an valid entry! " << endl;
}
if (month == 2 && day == 29 && (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)))
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 2 && day == 29 && (year % 4 != 0) && ((year % 100 == 0) || (year % 400 != 0)))
{
cout << "The date " << month << "-" << day << "-" << year << " is NOT valid. LEAP YEAR!" << endl;
}
if (month == 1 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 2 && day <= 28)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 3 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 4 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 5 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 6 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 7 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 8 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 9 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 10 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 11 && day <= 30)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
if (month == 12 && day <= 31)
{
cout << "The date " << month << "-" << day << "-" << year << " is valid." << endl;
}
else if ( month == 4 || 6 || 9 || 11 )
{
cout << "THE DATE" " "" < "<< day << "-" << month << "-" << year << ">" "is invalid";
}
return 0;
}
Last edited on
@tang
Your problem lies in this section of code.
Change it to
and your program will work as intended.
Your problem lies in this section of code.
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Change it to
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and your program will work as intended.
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