Leap Year in C++

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Q. Write a C++ program to check whether the given year is leap year or not?

#include <iostream>       
using namespace std;
  
int main()
{ 
    int yr;
    cout << "Enter a Year: ";
    cin >> yr;
    if ( yr % 400 == 0) 
        cout << yr << " is a leap year.";
    else if ( yr % 100 == 0) 
        cout << yr << " is not a leap year.";
    else if ( yr % 4 == 0) 
        cout << yr << " is a leap year.";
    else
        cout << yr << " is not a leap year."; 
	return 0;    
}
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Q. Write an algorithm to check whether the given year is leap year or not?

1. Start
2. Prompt the user to enter a year.
3. Read the input year into variable `yr`.
4. Check if `yr` is divisible by 400:
    - If yes, print "`yr` is a leap year."
5. Otherwise, check if `yr` is divisible by 100:
    - If yes, print "`yr` is not a leap year."
6. Otherwise, check if `yr` is divisible by 4:
    - If yes, print "`yr` is a leap year."
7. Else,
    - Print "`yr` is not a leap year."
8. End
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