C programming first_session
- 1. C_Programming First Session ENG. KEROLES SHENOUDA 1
- 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. 2
- 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 3
- 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 12
- 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) 17
- 18. Write first C Program (Run the Application) 18 After Press Run, Then you will see the Printf message appearing On the Console
- 19. Write first C Program (Debug the Application) 19
- 20. Write first C Program (Debug the Application) 20 Stopped on the Breakpoint
- 21. Write first C Program (Debug the Application) 21
- 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... 22
- 23. GCC Compilation Process LAB 1 on Ubuntu 23
- 24. GCC Compilation Process LAB 1 on Ubuntu 24
- 25. GCC Compilation Process LAB 1 on Ubuntu 25
- 26. GCC Compilation Process LAB 1 on Ubuntu 26
- 27. GCC Compilation Process LAB 1 on Ubuntu 27
- 29. First C Program “Hello Program” 29
- 30. 30
- 31. 31
- 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 34