Hello World in "C" languages

C#

//Hello World in C#

class HelloWorld

{

    static void Main()

    {

        System.Console.WriteLine("Hello, World!");

    }

}

C++

// Hello World in C++ (pre-ISO)

#include <iostream.h>

main()

{

    cout << "Hello World!" << endl;

    return 0;

}

C++-CLI

// Hello World in C++/CLI for .NET

using namespace System;

void main()

{

    Console::WriteLine("Hello World");

}

ANSI C

/* Hello World in C, Ansi-style */

#include <stdio.h>

#include <stdlib.h>

int main(void)

{

  puts("Hello World!");

  return EXIT_SUCCESS;

}

 


  

  

C-Objective

  
  





/* Hello World in Objective-C.

** Since the standard implementation is identical to K&R C,

** a version that says hello to a set of people passed on

** the command line is shown here.

*/

#include <stdio.h>

#include <objpak.h>


int main(int argc,char **argv)

{

    id set = [Set new];

    argv++;while (--argc)
[set add:[String str:*argv++]];

    [set do:{ :each |
printf("hello, %s!\n",[each str]); }];

    return 0;

}

 


  

  




C-OpenGL

  
  

  




 


/* "Hello World" in C using OGL - Open Graphics Library
*/




#include <GL/glut.h>

#define font GLUT_BITMAP_HELVETICA_18

#define tx "Hello World!"

void text(void)

{

 char *p, tex[] = tx;

 p = tex;

 glColor3d(1.0, 1.0, 0.0);

 glRasterPos2d(-.5, 0.);

 while(*p)
glutBitmapCharacter(font, *p++);

}

void display()

{

 glClear(GL_COLOR_BUFFER_BIT);

 text();

 glFlush();

}

void reshape(int width, int height)

{

 glViewport(0, 0, width,
height);

 glMatrixMode(GL_PROJECTION);

 glLoadIdentity();

 glOrtho(-1, 1, -1, 1, -1,
1);

 glMatrixMode(GL_MODELVIEW);

 display();

}




int main(int argc, char **argv)

{

 glutInit(&argc, argv);

 glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

 glutInitWindowPosition(50,
50);

 glutInitWindowSize(500,
500);

 glutCreateWindow("Hello World
OpenGL");

 glClearColor(0,0,0,0);

 glutDisplayFunc(display);

 glutReshapeFunc(reshape);

 glutMainLoop();

 return 0;

}