Single File Programming QuestionProblem StatementMerlin is working on a calendar application that requires a leap-year verification feature for accurate event scheduling. Users input a year, and her program determines whether it's a leap year or not, aiding in precise calendar calculations. Help her write a program to determine if the given year is a leap year or not by using only switch statements and operators.Note: This question was asked in TCS coding test.Input format :The input consists of an integer representing the year.Output format :If the given year is a leap year, the output prints "<<Input year>> is a leap year."Otherwise, the output prints "<<Input year>> is not a leap year."Refer to the sample output for the formatting specifications.Code constraints :In this scenario, the test cases fall under the following constraints:1900 ≤ Input year ≤ 2100
Question
Single File Programming QuestionProblem StatementMerlin is working on a calendar application that requires a leap-year verification feature for accurate event scheduling. Users input a year, and her program determines whether it's a leap year or not, aiding in precise calendar calculations. Help her write a program to determine if the given year is a leap year or not by using only switch statements and operators.Note: This question was asked in TCS coding test.Input format :The input consists of an integer representing the year.Output format :If the given year is a leap year, the output prints "<<Input year>> is a leap year."Otherwise, the output prints "<<Input year>> is not a leap year."Refer to the sample output for the formatting specifications.Code constraints :In this scenario, the test cases fall under the following constraints:1900 ≤ Input year ≤ 2100
Solution
To solve this problem, we need to understand the rules for determining if a year is a leap year or not. A leap year is exactly divisible by 4 except for century years (years ending with 00). The century year is a leap year only if it is perfectly divisible by 400.
Here is a step-by-step guide to solve this problem using C++:
- First, we need to include the necessary libraries. In this case, we only need the iostream library.
#include<iostream>
- Next, we define the main function.
int main() {
- Inside the main function, we declare an integer variable to store the year.
int year;
- We then use the cin function to get the year from the user.
std::cin >> year;
- Now, we need to determine if the year is a leap year or not. We can do this using a switch statement. The expression in the switch statement will be
(year % 4 == 0 && year % 100 != 0) || (year % 400 == 0). This expression checks if the year is exactly divisible by 4 and not exactly divisible by 100, or if the year is exactly divisible by 400.
switch((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
- If the expression is true, it means the year is a leap year. We print the appropriate message using the cout function.
case true:
std::cout << year << " is a leap year.";
break;
- If the expression is false, it means the year is not a leap year. We print the appropriate message using the cout function.
case false:
std::cout << year << " is not a leap year.";
break;
- We close the switch statement and the main function.
}
return 0;
}
So, the complete code will look like this:
#include<iostream>
int main() {
int year;
std::cin >> year;
switch((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
case true:
std::cout << year << " is a leap year.";
break;
case false:
std::cout << year << " is not a leap year.";
break;
}
return 0;
}
This program will correctly determine if the given year is a leap year or not.
Similar Questions
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