Aard is basically a programming tool. It checks memory use for C++ programs. It is written by Steve Reiss, who names his programs after living systems. It is used to track the state of each byte of memory in the heap and the stack. This is usually used when one study the course of Data Structures.
Metaprogramming is the writing of computer programs that write or manipulate other programs as their data or that do part of the work during compile time that is otherwise done at run time. In many cases, this allows programmers to get more done in the same amount of time as they would take to write all the code manually.
When we come to the professional environment of programming, we see the two big names of programming languages which are leading. These are C++ and Java. The major difference which can be found in C++ and Java is that programs in java are a slower to run than C++. Java is 20 times slower then C++. Which make a huge difference between the languages.