1 files changed, 26 insertions, 0 deletions
diff --git a/6p4.cpp b/6p4.cpp
new file mode 100644
index 0000000..28c6fa5
--- /dev/null
+++ b/6p4.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+
+/*
+ *
+ * 6.4
+ *
+ *
+ */
+
+uint64_t fact(void) {
+	
+	uint64_t val;
+	if(std::cin >> val) {} else { return 0; }
+	uint64_t ret = 1;
+	while(val > 1) {
+		ret *= val--;
+	}
+	
+	return ret;
+}
+
+int main () {
+
+	std::cout << fact() << std::endl;
+	return 0;
+}