Data commit

Task/Leap-year/C/leap-year.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+int is_leap_year(unsigned year)
+{
+    return !(year & (year % 100 ? 3 : 15));
+}
+
+int main(void)
+{
+    const unsigned test_case[] = {
+        1900, 1994, 1996, 1997, 2000, 2024, 2025, 2026, 2100
+    };
+    const unsigned n = sizeof test_case / sizeof test_case[0];
+
+    for (unsigned i = 0; i != n; ++i) {
+        unsigned year = test_case[i];
+        printf("%u is %sa leap year.\n", year, is_leap_year(year) ? "" : "not ");
+    }
+    return 0;
+}