https://www.linkedin.com/pulse/learning-cembedded-c-step-by-step-from-scratch-keroles-karam

1. C_Programming
First Session
ENG. KEROLES SHENOUDA
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2. Why C, and not assembly language?
 While assembly language can provide speed and maximum control of the program, C
provides portability.
 Different processors are programmed using different Assembly languages and having to
choose and learn only one of them is too arbitrary. In fact, one of the main strengths of C is
that it combines universality and portability across various computer architectures while
retaining most of the control of the hardware provided by assembly language.
 For example, C programs can be compiled and run on the HP 50g calculator (ARM
processor), the TI-89 calculator (68000 processor), Palm OS Cobalt smartphones (ARM
processor), the original iMac (PowerPC), the Arduino (Atmel AVR), and the Intel iMac (Intel
Core 2 Duo). Each of these devices has its own assembly language that is completely
incompatible with the assembly language of any other.
 Assembly, while extremely powerful, is simply too difficult to program large applications and
hard to read or interpret in a logical way. C is a compiled language, which creates fast and
efficient executable files. It is also a small "what you see is all you get" language: a C
statement corresponds to at most a handful of assembly statements, everything else is
provided by library functions.
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3. Why C, and not another language?
 The primary design of C is to produce portable code while maintaining
performance and minimizing footprint (CPU time, memory, disk I/O, etc.). This
is useful for operating systems, embedded systems or other programs where
performance matters a lot ("high-level" interface would affect performance)
 One powerful reason is memory allocation. Unlike most programming
languages, C allows the programmer to write directly to memory.
 C gives control over the memory layout of data structures
 Moreover dynamic memory allocation is under the control of the programmer
(which also means that memory deallocation has to be done by the
programmer).
 While Perl, PHP, Python and Ruby may be powerful and support many features
not provided by default in C
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4. Compilation Process 4

5. C - Environment Setup 5
IDE + Compiler
Install Eclipse C/C++ Development Tool (CDT)
Java Downloads for All Operating Systems
1. Install MinGW GCC
Minimalist GNU for Windows
https://sourceforge.net/projects/mingw/file
s/
2. Cygwin GCC
https://www.cygwin.com/setup-x86.exe
Cygwin is:
a large collection of GNU and Open Source tools
which provide functionality similar to a Linux
distribution on Windows.
a DLL (cygwin1.dll) which provides substantial
POSIX API functionality.

6. Install MinGW GCC 6
Press Apply to all
Install MinGW GCC
Minimalist GNU for Windows
https://sourceforge.net/projects/mingw/files/

7. Install MinGW GCC 7
Wait until downloading Complete

8. Install MinGW GCC 8

9. Install MinGW GCC 9
En you can see all the basic packets
became green

10. Install MinGW GCC 10
Then you can see the
gcc and gdb and other
binary utilities installed
(Native Toolchain )

11. Eclipse C/C++ (CDT) 11
 Install Eclipse C/C++ Development Tool (CDT)
 Java Downloads for All Operating Systems

12. Write first C Program
 Open Eclipse
 Chose an empty Directory For eclipse workspace
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13. Write first C Program 13

14. Write first C Program 14

15. Write first C Program 15

16. Write first C Program 16

17. Write first C Program (Build the
Application)
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18. Write first C Program (Run the
Application)
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After Press Run,
Then you will see the
Printf message appearing
On the Console

19. Write first C Program (Debug the
Application)
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20. Write first C Program (Debug the
Application)
20
Stopped
on the
Breakpoint

21. Write first C Program (Debug the
Application)
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22. GCC Compilation Process
 Pre-processing: via the GNU C Preprocessor (cpp.exe), which includes the
headers (#include) and expands the macros (#define).
 cpp hello.c > hello.i
The resultant intermediate file "hello.i" contains the expanded source code.
 Compilation: The compiler compiles the pre-processed source code into
assembly code for a specific processor.
 gcc -S hello.i
The -S option specifies to produce assembly code, instead of object code. The
resultant assembly file is "hello.s".
 Assembly: The assembler (as.exe) converts the assembly code into machine
code in the object file "hello.o".
 as -o hello.o hello.s
 Linker: Finally, the linker (ld.exe) links the object code with the library code
to produce an executable file "hello.exe".
 ld -o hello.exe hello.o ...libraries...
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23. GCC Compilation Process LAB 1
on Ubuntu
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24. GCC Compilation Process LAB 1
on Ubuntu
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25. GCC Compilation Process LAB 1
on Ubuntu
25

26. GCC Compilation Process LAB 1
on Ubuntu
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27. GCC Compilation Process LAB 1
on Ubuntu
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28. Compilation Process 28

29. First C Program “Hello Program” 29

30. 30

31. 31

32. Chapter 1:
Introduction
HTTPS://DRIVE.GOOGLE.COM/FILE/D/0B7KUSGPVTWFLAEZDWLZEZM0XS0U/VIEW
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33. C Programming Data Types 33

34. Refrences
 GCC and Make Compiling, Linking and Building C/C++ Applications
 C Programming/Why learn C?
 Getting Started with C/C++ Development Tools for NI Linux Real-Time, Eclipse
Edition
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