The Compilation Process

A program goes from text files(or source files)to processor instructions as follows:

Object files are intermediate files that represent an incomplete copy of the program: each

source file only expresses a piece of the program, so when it is compiled into an object file,

the object file has some markers indicating which missing pieces it depends on. The linker

takes those object files and the compiled libraries of predefined code that they rely on, fills

in all the gaps, and spits out the final program, which can then be run by the operating

system (OS).

The compiler and linker are just regular programs. The step in the compilation process in

which the compiler reads the file is called parsing.

In C++, all these steps are performed ahead of time, before you start running a program.

In some languages, they are done during the execution process, which takes time. This is

one of the reasons C++ code runs far faster than code in many more recent languages.

C++ actually adds an extra step to the compilation process: the code is run through a

preprocessor, which applies some modifications to the source code, before being fed to the

compiler.

Putimage function in c

putimage function outputs a bit image onto the screen. Declaration:- void putimage(int left, int top, void *ptr, int op); putimage puts the bit image previously saved with getimage back onto the screen, with the upper left corner of the image placed at (left, top). ptr points to the area in memory where the source image is stored. The op argument specifies a operator that controls how the color for each destination pixel on screen is computed, based on pixel already on screen and the corresponding source pixel in memory. c smiling face animation This animation using c draws a smiling face which appears at random position on screen. See output below the code, it will help you in understanding the code easily. C programming code #include<graphics.h> #include<conio.h> #include<stdlib.h> main() { int gd = DETECT, gm, area, temp1, temp2, left = 25, top = 75; void *p; initgraph(&gd,&gm,"C:\\TC\\BGI"); setcolor(YELLOW)...

C++ Program to find the sum, difference, product and quotient of two integers

#include <iostream.h> #include <conio.h> void main() { clrscr(); int x = 10; int y = 2; int sum, difference, product, quotient; sum = x + y; difference = x - y; product = x * y; quotient = x / y; cout << "The sum of " << x << " & " << y << " is " << sum << "." << endl; cout << "The difference of " << x << " & " << "y << is " << difference << "." << endl; cout << "The product of " << x << " & " << y << " is " << product << "." << endl; cout << "The quotient of " << x << " & " << y << " is " << quotient << "." << endl; getch(); }

What is iostream.h in C++ Programing Language ?

In C++ programing language, all header files end with .H extension. In standard C++, all devices are accessed and used as a file. One such header file is iostream.h in C++ programming language. In this, all input and output devices are treated as files. Let's quickly look at what are the input and output devices mean in C++ program. Standard Input Device - Keyboard Standard Output Device - Monitor Standard Error Device - Screen or monitor In C++, input and output are not defined within, and are implemented with the help of a component of the C++ standard library which is I/O library. A file is read simply as a stream of bytes at the lowest level. But at a user level, a file consists of possibly mixed data types which can be characters, arithmetic values class, objects etc. What are the predefined streams in I/O Library? As discussed above there are input, output and error library in c++, they have some predefined streams objects as well w...

C++ Program

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