more

1 files changed, 20 insertions, 0 deletions

diff --git a/fact.cc b/fact.cc
new file mode 100644
index 0000000..a79d2b7
--- /dev/null
+++ b/fact.cc
@@ -0,0 +1,20 @@
+#include <iostream>
+
+/*
+ *
+ *
+ *
+ *
+ */
+
+uint64_t fact_i(void) {
+	
+	uint64_t val;
+	if(std::cin >> val) {} else { return 0; }
+	uint64_t ret = 1;
+	while(val > 1) {
+		ret *= val--;
+	}
+	
+	return ret;
+}