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Why C++?

Why C++?

C++ is an advanced, powerful Computer Programming language, yet it is relatively easy to introduce and learn. it is most modern, high-performance computer programs are written using C++.

C++ knows about objects and therefore can teach sound programming techniques from the very beginning.
C++ is a compiled computer language. This means the original source code is translated into a specific machine’s native tongue, all at once, before the program is run.
The program the computer runs is composed entirely of instructions known to it, requiring no further interpretation.
Below a picture has been given to understand so how c++ source code translate into machine code:
Source Code
#include
int main()
 
{
cout << “Bonjour Monde!” << endl;
return 0;
}
 
Compiler
A compiler is a very specialized computer program that translates source code into machine-specific code.
Compiler writing is very difficult and esoteric and is one of the more advanced and complex parts of computer science.
It is not too much to say that a compiler writer is to a computer programmer as a computer programmer is to someone who thinks they speak Latin in Latin America.
Machine specific code
F000:0000 F0 LOCK
F000:0001 8AC4 MOV AL,AH
F000:0003 9A5CF000F0 CALL F000:F05C
F000:0008 EBEA JMP FFF4
F000:000A 8AC2 MOV AL,DL
F000:000C 02C6 ADD AL,DH
F000:000E 52 PUSH DX
F000:000F BA8103 MOV DX,0381
F000:0012 9AD44500F0 CALL F000:45D4
F000:0017 5A POP DX
F000:0018 5A POP DX
F000:0019 59 POP CX
F000:001A 58 POP AX
F000:001B CB RETF
F000:001C 56 PUSH SI
F000:001D D000 ROL BYTE PTR [BX+SI],1
F000:001F F0 LOCK
F000:0020 82D000 ADC AL,00
Note This code only show how the program of c++ language converted into machine language.
The other major approach to running a computer program is called interpretation. An interpreter converts a computer program into the host machine’s native tongue, instruction by instruction, as the program runs.
This is a nice environment in which to write programs, but if the program is simply used and is no longer being developed, much time is wasted re-interpreting instructions that could be translated just once and stored in translated form.
Because a compiler translates the entire program at once, compiled programs are faster than interpreted programs, and are preferred for tasks that require high performance.
There are two principal reasons for high-level languages like C++.
The first is to make program development easier each instruction written in C++ might represent dozens or hundreds of lower-level native instructions.
The second is to make programs portable if sufficient care is taken in development, a program written for one computer can be re-compiled and run on another.
Therefore, a programmer need only learn one computer language, instead of one language per computer architecture.
If a single program can be run on any machine, the unit price of software can go down. It would be nice if there were an interpreted version of C++, for program development work only, so the developer would not have to re-compile after each trivial change.
But this hasn’t happened yet, and in any case, it would probably be an expensive environment.
C++ is a third generation programming language. When computers were first invented, they were programmed with very simple, low-level commands.
A programmer would design a program, then translate the program into a specific set of codes, known as machine language.
These codes would be fed into a computer with switches, punch-cards, or primitive keypads.
These programs were cumbersome to write, and very hard to debug (Debugging is the act of removing mistakes in a program). Machine code is considered the first generation of programming languages.
Third generation languages are compiled languages. These languages are not processor-specific.
In theory, a program written in a third generation language will be able to run on any other machine. This is not always the case, due to a number of factors.
Third generation languages are much more abstract than assembly languages. Third generation languages are translated into assembly language by a complicated piece of software called a compiler. A compiler can be thought of a language translator.
C++ is a very useful language, because it gives the programmer a lot of control, but also is abstract enough so development can be done fairly quickly.
C++ is a very portable language as well, because it is a third-generation language, and because it has a well-defined set of standards written for it.
C++ is widely used for program development under a variety of operating systems. Good C++ programmers are in high demand today.

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