Create leap_year_finder.cpp

C++/leap_year_finder.cpp

@@ -0,0 +1,71 @@
+#include<iostream>
+
+using namespace std;
+
+
+// function that ask an integer and returns it
+int ask_number(){
+
+  // declaring variable named number as an integer
+  int number ;
+
+  // ask for input and save it in number
+  std::cin >> number;
+
+  // loop that check wether number is an integer
+  while (cin.fail() || number < 0 ) {
+
+    std::cout << "Enter a positive integer please" << '\n';
+
+    // clearing cin.fail() status
+    cin.clear();
+    // clearing the iostream buffer
+    cin.ignore(256,'\n');
+    // ask for input and save it in number
+    std::cin >> number;
+
+  }
+
+  // returning the number for the function ask_number()
+  return number;
+}
+
+int main () {
+
+  // declaring integer to store starting , ending and total years
+  int fromYear , toYear, total_years =0 ;
+
+  std::cout << "Enter the year you wanna start" << '\n';
+  // run the function ask_number() and store it's return fromYear
+  fromYear = ask_number();
+
+  std::cout << "Enter the year you wanna end" << '\n';
+  // run the function ask_number() and store it's return toYear
+  toYear = ask_number();
+
+  // loop that keep running until to years are greater than from years
+  while (toYear<=fromYear) {
+    std::cout << "ending year should be smaller then starting year" << '\n';
+    // run the function ask_number() and store it's return toYear
+    toYear = ask_number();
+  }
+
+  // loop that run from starting years to ending years
+  for (int i = fromYear-1; i < toYear+1; i++) {
+
+    // check if the year is divisble by four and not divisble by 100
+    // or if its divisible by both four hunder and one hundred
+    if ((i%100)!=0 ? (i%4==0) : i%400==0 ) {
+      std::cout << i << '\n';
+      // incrementing the total leap years counter
+      total_years++;
+    }
+
+  }
+
+  // displaying total leaps years
+  std::cout << "total number o fleap years in betweeen :"<< total_years << '\n';
+
+  return 0;
+
+}