Added MemcmpTest.cpp, InheritTest.cpp

datatype/MemcmpTest.cpp

@@ -0,0 +1,13 @@
+#include<cstring>
+#include<iostream>
+#include<hgl/type/DataArray.h>
+
+int main(int,char **)
+{
+    char left   []="1234567890";
+    char right  []="2345678901";
+
+    std::cout<<"memcmp: "<<std::memcmp(left,right,10)<<std::endl;
+
+    return 0;
+}