Create leapyear.c

datetime/leapyear.c

@@ -0,0 +1,39 @@
+#include <windows.h>
+#include <stdbool.h>
+#include <wchar.h>
+
+bool isLeapYear(int);
+
+int wmain(void) {
+
+    int years[] = { 2000, 2002, 2004, 2008, 2012, 2016, 2020,
+        1900, 1800, 1600, 1200, 1000 };
+
+    int size = sizeof(years) / sizeof(int);
+
+    for (int i=0; i<size; i++) {
+
+        if (isLeapYear(years[i])) {
+
+            wprintf(L"%ld is a leap year\n", years[i]);
+        } else {
+
+            wprintf(L"%ld is not a leap year\n", years[i]);
+        }
+    }
+
+    return 0;
+}
+
+bool isLeapYear(int year) {
+
+    if ((year % 100 == 0) && (year % 400 == 0)) {
+        return true;
+    }
+
+    if ((year % 4 == 0) && (year % 100 !=0)) {
+        return true;
+    }
+
+    return false;
+}