Er zijn 1 reacties in dit onderwerp

[Vozzie]

Create A C program.

• Open a terminal (i used the pi user).
  
  
• Create and go to a directory for your C programs.
  
  pi@raspberrypi ~ $ mkdir /home/pi/c
  pi@raspberrypi ~ $ mkdir /home/pi/c/hello
  pi@raspberrypi ~ $ cd /home/pi/c/hello
  
  
• Create and edit a c file.
  
  pi@raspberrypi ~/c/hello $ nano hello.c
  
  
• Enter this small c program.
  
  C Code:

  #include <stdio.h>
  
  int main() {
  		printf("hello universe");
  		return 0;
  }
  

  
  
• Exit and save.
  
  
• Compile and build the program. gcc = gnu compiler, -o = output filename
  
  pi@raspberrypi ~/c/hello $ gcc -o hello hello.c
  
  
• Give execute rights.
  
  pi@raspberrypi ~/c/hello $ chmod 755 hello
  
  
• Run the program.
  
  pi@raspberrypi ~/c/hello $ ./hello
  hello universe

Create a C program with headers and modules.

• Open and edit hello.c
  
  pi@raspberrypi ~/c/hello $ nano hello.c
  
  
• Change the code to
  
  C Code:

  #include "hello.h"
  #include <stdio.h>
  
  void hello()
  {
  		printf("hello universe\n");
  }
  

  
  
• Create and edit hello.h
  
  pi@raspberrypi ~/c/hello $ nano hello.h
  
  
• Enter this code. void hello() is a prototype for the hello function.
  
  C Code:

  #ifndef __HELLO_H__
  #define __HELLO_H__
  
  void hello();
  
  #endif
  

  
  
• Create and edit main.c
  
  pi@raspberrypi ~/c/hello $ nano main.c
  
  
• Enter this code.
  
  C Code:

  #include "hello.h"
  
  int main(){
  		hello();
  		return 0;
  }
  

  
  
• Compile and build the program. gcc = gnu compiler, -o = output filename
  
  pi@raspberrypi ~/c/hello $ gcc -o hello hello.c main.c
  
  
• Give execute rights
  
  pi@raspberrypi ~/c/hello $ chmod 755 hello
  
  
• Run the program
  
  pi@raspberrypi ~/c/hello $ ./hello
  hello universe

Create a C++ program with headers and modules.

• Create a directory for the cpp files
  
  pi@raspberrypi ~/c/hello $ mkdir /home/pi/cpp
  pi@raspberrypi ~/c/hello $ mkdir /home/pi/cpp/hello
  pi@raspberrypi ~/c/hello $ cd /home/pi/cpp/hello
  
  
• Create and edit hello.h
  
  pi@raspberrypi ~/cpp/hello $ nano hello.h
  
  
• Enter this code.
  
  C Code:

  #ifndef __CHELLO_H__
  #define __CHELLO_H__
  
  class CHello {
  public:
  		CHello();
  		~CHello();
  		void SayHello();
  };
  
  #endif
  

  
  
• Create and edit hello.cpp
  
  pi@raspberrypi ~/cpp/hello $ nano hello.cpp
  
  
• Enter this code (for VB users, note that the class member methods are defined outside the class defenition. Inside is possible too.)
  
  C Code:

  #include <iostream>
  #include "hello.h"
  
  // constructor
  CHello::CHello(){
  		std::cout << "constructor\n";
  }
  
  // destructor
  CHello::~CHello(){
  		std::cout << "destructor\n";
  }
  
  // member method
  void CHello::SayHello(){
  		std::cout << "hello universe\n";
  }
  

  
  
• Create and edit main.cpp
  
  pi@raspberrypi ~/cpp/hello $ nano main.cpp
  
  
• Enter this code
  
  C Code:

  #include "hello.h"
  
  int main(){
  		CHello * pHello = new CHello();
  		pHello->SayHello();
  		delete pHello;
  		return 0;
  }
  

  
  
• Compile the files and build the program. gcc = gnu compiler, -lstdc++ = standard C++ flag, -o = output filename
  
  pi@raspberrypi ~/cpp/hello $ gcc -lstdc++ -o hello hello.cpp main.cpp
  
  
• Give hello execute rights
  
  pi@raspberrypi ~/cpp/hello $ chmod 755 hello
  
  
• Run the program.
  
  pi@raspberrypi ~/cpp/hello $ ./hello
  constructor
  hello universe
  destructor

[RedThread]

Going to try this in the weekend vozzie ! thx