diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3ba9bbf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+init/init
+factorial/factorial
+datatypes/datatypes
+appending/appending
diff --git a/datatypes/datatypes.d b/datatypes/datatypes.d
index 9882e84..be9eb09 100644
--- a/datatypes/datatypes.d
+++ b/datatypes/datatypes.d
@@ -34,7 +34,7 @@ int main()
     writefln("char (%d)\twchar (%d)\tdchar (%d)",
             char.sizeof, wchar.sizeof, dchar.sizeof);
 
-    writefln();
+    writefln("");
     writefln("char min: %d\tmax: %d", char.min, char.max);
     writefln("wchar min: %d\tmax: %d", wchar.min, wchar.max);
 
diff --git a/init/init.d b/init/init.d
index b47b7a9..3e31a26 100644
--- a/init/init.d
+++ b/init/init.d
@@ -2,10 +2,10 @@
 import std.stdio;
 
 int magicNumber = 42;
-char[] password = "sesame";
+string password = "sesame";
 
 void main()
 {
-    writefln("Magic number: ", magicNumber);
-    writefln("Password: ", password);
+    writefln("Magic number: %s", magicNumber);
+    writefln("Password: %s", password);
 }