factorial

factorial.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+int factorial(int n)
+{
+    if (n <= 1)
+    {
+        return n;
+    }
+
+    return n * factorial(n - 1);
+}
+
+int main(void)
+{
+    int f;
+
+    f = factorial(5);
+
+    printf("%d\n", f);
+
+    return 0;
+}