diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2a268cd
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.exe
+*.obj
+*.lnk
diff --git a/listing1-4.asm b/listing1-4.asm
new file mode 100644
index 0000000..63a0c8d
--- /dev/null
+++ b/listing1-4.asm
@@ -0,0 +1,12 @@
+  .code
+myProc proc
+  ret
+myProc endp
+
+main PROC
+
+  call myProc
+
+  ret
+main endp
+  end
diff --git a/listing1-5.asm b/listing1-5.asm
new file mode 100644
index 0000000..3a30d02
--- /dev/null
+++ b/listing1-5.asm
@@ -0,0 +1,22 @@
+  option casemap:none
+  .data
+
+fmtStr byte   "Hello, world!", 10, 0
+
+  .code
+
+  externdef printf:proc
+
+  public asmFunc
+asmFunc proc
+
+  sub rsp, 56
+
+  lea   rcx, fmtStr
+  call printf
+
+  add rsp, 56
+
+  ret
+asmFunc endp
+  end
diff --git a/listing1-6.cpp b/listing1-6.cpp
new file mode 100644
index 0000000..08221fd
--- /dev/null
+++ b/listing1-6.cpp
@@ -0,0 +1,12 @@
+
+#include <stdio.h>
+extern "C"
+{
+  void asmFunc(void);
+};
+
+int main(void){
+  printf("Calling asmFunc: \n");
+  asmFunc();
+  printf("Returned from asmFunc\n");
+}