C++

Lab Report

Question

1.  How to

a.     Compilation process.

è Preprocessing: frequently, the source code you type into a program is incomplete and invalid.  Consider the following:

#include <iostream>

int main()

{

  std::cout<<"Hello World!\n";

  return 0;

}

b.     Execute  the program.

Example :

è Initiate execution (as task #0) of the program named assembly, with execution to continue indefinitely (that is, until execution is aborted, a HALT instruction is executed, or a run-time error occurs):

EXECUTE 0 assembly, -1

Initiate execution, with program task #2, of the program named test. The parameter values 1 and 2 are passed to the program.

EXECUTE 2 test(1,2)

The following program segment shows how an application program can be initiated from another application program (the ABORT and CYCLE.END program instructions are used to make sure the specified program task is not already active):

ABORT 3                    ;Abort any program already active

CYCLE.END 3                ;Wait for execution to abort

EXECUTE 3 new.program      ;Start up the new program

2. What is C++ Programming

C++ is an "object oriented" programming language created by Bjarne Stroustrup and released in 1985. It implements "data abstraction" using a concept called "classes", along with other features to allow object-oriented programming. Parts of the C++ program are easily reusable and extensible; existing code is easily modifiable without actually having to change the code. C++ adds a concept called "operator overloading" not seen in the earlier OOP languages and it makes the creation of libraries much cleaner.

C++ maintains aspects of the C programming language, yet has features which simplify memory management. Additionally, some of the features of C++ allow low-level access to memory but also contain high level features.

C++ could be considered a superset of C. C programs will run in C++ compilers. C uses structured programming concepts and techniques while C++ uses object oriented programming and classes which focus on data. Read about the History of C and also about the History of C++.