Compilation of C Source Code





In order to write and compile the C program you need the following software ...

1. Text Editor

This will be used to type your program. Examples of few editors like ...
      Notepad, Notepad++, Gedit etc.

The files you create with your editor are called source files, and for 'C' they are named with the extension .c.

2. C Compiler

C compiler will use to compile your source code into executable program.

You can use any standard C compiler like GNU C, Turbo C, Dev C etc.

Note : In this tutorial we have used GNU C/C++ compiler in order to make the examples.


You can also use popular IDE, in order to write and execute your C programs.
Like :- TurboC, Dev C, Code Block etc...

The code compilation is a multi-stage process to convert high-level source code to binary executable format for machines.

Compilation/Translation Tools:

Compiler
Interpretter
Assembler
Linker
Loader

Compiler

Compiler is a translator.

Convert High-Level source code to object code.

Object produced by compiler gets saved in a file. So file do not need to compile again and again.

Interpreter

Interpreter is a translator.

Used to translate source code to object code.

Interpreter scans one line at a time of source program if there is any syntax error ,the execution of program terminates immediately.

Assembler

Assembly and machine language are low level language.

The assembly codes are easier to write but system can executes the machine code only.

So we need a translator (Assembler) to translate assembly code to machine code.

Linker

A linker is a program that combines object codes to form an executable program.

It links the object modules with library functions and make executable program.

Loader

Loader is an operating system utility that copies program from a storage device to main memory, where they can be executed.

It is a part of Operating System(OS) and used to load the program.


C Code Compilation

Compilation on Windows

  Using Turbo C IDE

 F2        : SAVE SOURCE CODE
 F2 Again  : SOURCE CODE BACKUP 
 Alt + F9  : COMPILE 
 F9        : MAKE EXE
 Ctrl + F9 : COMPILE + RUN
 Alt + F5  : LAST OUTPUT

Compilation on Linux

  Using GCC on Terminal

  Compile Command:
    gcc source_code.c 
  Run Command:
    ./a.out
 or 
  Compile Command:
    gcc -o abc.out source_code.c 
  Run Command:
    ./abc.out

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