Update 003_template_external_template.cpp

Author: ls-Brynn

cpp_11/003_template_external_template.cpp

@@ -1 +1,17 @@
-1
+// test.h
+template <typename T> 
+void fun(T) { }
+
+// test1.cpp
+#include "test.h" 
+void test1() 
+{ 
+    fun(1); 
+}
+
+// test2.cpp
+#include "test.h" 
+void test2()
+{
+    fun(2);
+}