Microsoft Visual C++/cli step by Step

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Microsoft Visual C++/CLI Step by Step

5. 

Run the application again. Type the year 2012 and the month 2.

The application prompts you to enter a day between 1 and 28, as shown here:

6. 

Type a valid day and close the console window when the date is displayed. (Don’t worry about 

the date validation in main: You will remove it later and replace it with more comprehensive 

validation in the GetMonth and GetDay functions.)

performing nested tests

It is possible to nest tests within one another. This makes it possible for you to perform more complex 

logical operations. The following code shows how to use nested tests to accommodate leap years cor-

rectly in the Calendar Assistant application:

int maxDay; 

if (month == 4 || month == 6 || month == 9 || month == 11) 

{ 

    maxDay = 30; 

} 

else if (month == 2) 

{ 

    bool isLeapYear = (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0); 

    if (isLeapYear) 

    { 

        maxDay = 29; 

    } 

    else 

    { 

        maxDay = 28; 

    } 

} 

else 

{ 

    maxDay = 31; 

}

If the month is February, you define a bool variable to determine if the year is a leap year. A year 

is a leap year if it is evenly divisible by 4 but not evenly divisible by 100 (except years that are evenly 

divisible by 400, which are leap years). The following table shows some examples of leap years and 

non–leap years.

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