===============================Module1=====================================
|                                                                         |
|  The program examples' source codes have been arranged in the same      |
|  order that appeared in the Tutorial. This is unedited and unverified   |
|  compilation. Published as is basis for educational, reacretional and   |
|  brain teaser purposes. All trademarks, copyrights and IPs, wherever    |
|  exist, are the sole property of their respective owner and/or          |
|  holder. Any damage or loss by using the materials presented in this    |
|  tutorial is USER responsibility. Part or full distribution,            |
|  reproduction and modification is granted to any body.                  |
|     Copyright 2003-2005 © Tenouk, Inc. All rights reserved.		  |
|          Distributed through http://www.tenouk.com			        |
|        		                                                        |
|									                    |
===========================================================================
Originally programs compiled using Borland C++. Examples compiled using
VC++/VC++ .Net and gcc or g++ are given at the end of every Module.
For example if you want to compile C++ codes using VC++/VC++ .Net, change
the header file accordingly.  Just need some modification for the header
files...:

-------------------------------------------------
#include <iostream.h>
//for system()
#include <stdlib.h>

...
{
C++ codes...
}
-------------------------------------------------
should be changed to:
-------------------------------------------------
#include <iostream>
//use C++ wrapper to call C functions from C++ programs...
#include <cstdlib>
using namespace std;

...
{
C++ codes...
}
-------------------------------------------------
In VC++/VC++ .Net the iostream.h (header with .h) is not valid anymore.
It should be C++ header, <iostream> so that it comply to the standard.
In older Borland C++ compiler this still works, but not proper any more...
and for standard C/C++ the portability should be no problem or better
you read Module23 at http://www.tenouk.com/Module23.html to get
the big picture...For C codes, they still C codes :o)
=========================================================================
=========================================================================


#include <stdio.h>

int main()
{
   return 0;
}

-----------------------------------------------------------

/*More simplest program example*/
/*preprocessor directives - header file*/
#include <stdio.h>
#include <stdlib.h>

/*main() function with no argument*/
/*and int return value…*/
int main()                             
{
   printf("Testing 1...2...3...\n");
   printf("Hello dude!\n");
   return 0;
}

-----------------------------------------------------------------

/*More simplest program example*/
/*preprocessor directives - header file*/
#include <stdio.h>
#include <stdlib.h>

/*main() function with no argument*/
/*and no return value…*/
void main()                             
{
   printf("Testing 1...2...3...\n");
   printf("Hello dude!\n");
   return;
}

-----------------------------------------------------------------

/*More simplest program example*/
/*preprocessor directives - header file*/
#include <stdio.h
#include <stdlib.h>

/*main() function with no argument*/
/*and no return value…*/
void main()                             
{
   printf("Testing 1...2...3...\n");
   printf("Hello dude!\n");
}

-----------------------------------------------------------------

//Another simplest program example
//preprocessor directives - header files
//Change the header files accordingly for C++ codes...using
//VC++/VC++ .Net and other C++ standard compliance compiler...
//#include <iostream>
//#include <cstdlib>
//using namespace std;
#include <iostream.h>
#include <stdlib.h>

//main() function with no argument
//and int return value…
int main( )                             
{
  cout<<"testing 1..2..3..\n";
  //system call ‘pause’
  //command to wait temporarily for user action
  //by calling the system pause command
  //pause is Borland specific, for other compilers you may
  //discard this and its header <stdlib.h>
  system("pause");

  //return to Operating System, no error
  return 0;
}

---------------------------------------------------------------------------------

//More simplest program example
//preprocessor directives - header files
#include <iostream.h>
#include <stdlib.h>

//main() function with no argument
//and int return value…
int main()                             
{
  cout<<"testing 1..2..3..\n";

  //system call ‘pause’
  //command to wait temporarily for user action
  //by calling the system pause command
  //pause is Borland specific, for other compilers you may
  //discard this and its header <stdlib.h>
  system("pause");

  //return to Operating System, no error
  return 0;
}

------------------------------------------------------------------------------------

//Simple greeting program using an array, pointer and selection
//you will learn more about array, pointer and selection later.
//The following #include … called preprocessor directive/header files.
//Means include the iostream.h file so that the compiler can find the
//definition for the cin and cout, then the cin and cout can function properly
//#include <iostream>
//for system()
//#include <cstdlib>
//using namespace std;

#include <iostream.h>
//for system()
#include <stdlib.h>

int main(void)
{
  //normal variable and array with their respective data type
  char name[11], name1[11], sex;

  cout<<"\nEnter your first name (max 10 characters): ";
  cin>>name;

  cout<<"Enter your last name (max 10 characters): ";
  cin>>name1;
  cout<<"\nEnter your sex (M or F): ";
  cin>>sex;

  //test whether male or female
  if (sex == 'M')		

  //array name without brackets is the pointer to the first
  //array's element
  cout<<"\nHow are you, Mr. "<<name<<" "<<name1<<endl;
      else
  cout<<"\nHow are you, Ms/Mrs  "<<name<<" "<<name1<<endl;

  system("pause");
  
  return 0;
}

-----------------------------------------------------------------------------------

#include <stdio.h>

int main()
{
  /*normal variable and array with their respective data type*/
  char sex, name[11], name1[11];
  
  printf("Enter your sex (M or F): ");
  scanf("%c", &sex);

  printf("Enter your first name (max 10 characters): ");
  scanf("%s", &name);

  printf("Enter your last name (max 10 characters): ");
  scanf("%s", &name1);

  /*test whether male or female*/
  if (sex == 'M')
		
  /*array name without brackets is the pointer to the first*/
  /*array's element*/
     printf("\nHow are you, Mr. %s %s.\n", name, name1);
  else
     printf("\nHow are you, Ms/Mrs. %s %s\n", name, name1);

  return 0;
}

---------------------------------------------------------------------------------------

//one line comment in program, C++
/*multiple lines comment, C - Program to display 
square and square root for a given number*/
/*for sqrt() function*/
#include <math.h>
/*for printf() and scanf()*/
#include <stdio.h>
//for system()
#include <stdlib.h>

int main()
{
  /*variable named x and floating-point data type*/
  float	x;

  /*standard output*/
  printf("\nEnter one positive number (1, 2, 3. . .): ");
  /*standard input*/
  scanf("%f", &x);

  printf("\nx = %f ", x);
  printf("\nSquare for x is = %f", x * x);
  
  //sqrt() is the predefined function, defined in math.h
  printf("\nSquare root for x is = %f\n", sqrt(x));
  system("pause");
  
  return 0;
}

----------------------------------------------------------------------------------

/*Simple mathematics calculation
header files…*/
#include <stdio.h>
#include <stdlib.h>

/*main() function…*/
int main( )
{
  /*variables declaration*/
  int x, y, z;

  /*variables initialization*/
  /*assign 20 to variable x…*/
  /*or put the value of 20 in memory location labeled by x*/
  x = 20;
  y = 2;

  printf("Given x = 20, y = 2\n");
  printf("\nx / y = %d", x / y);
  
  /*do some calculation*/
  x = x * y;
  y = y + y;
  
  /*print values*/
  printf("\nx = x * y");
  printf("\ny = y + y");
  printf("\nNew value for x / y = %d", x / y);
  
  z = 20 * y / x;
  printf("\nz = 20 * (y / x) = %d\n", z);
  system("pause");
  return 0;
}

-------------------------------------------------------------------------------

//Another simple mathematics calculation
//#include <iostream>
//#include <cstdlib>
#include <iostream.h>
#include <stdlib.h>

int main(void)
{
  //variables declaration
  //variable names and type
  float a, b, c;
  
  //variables initialization
  a = 2.0;
  b = 5.0;
  c = b / a;
  
  cout<<"\nGiven a = 2.0, b = 5.0, c = b/a";
  cout<<"\nc = "<<c;
  
  c = c + (a/b);
  
  cout<<"\nc = c + (a/b) = "<<c<<endl;
  
  //call the predefined function
  //for Borland...
  system("pause");
  return 0;
}

------------------------------------------------------------------------------

//another mathematics calculation
#include <iostream.h>
#include <stdlib.h>

int main(void)
{
  float x, y, z;

  //Display for user data on standard output, screen
  cout<<"\nKey in 1st positive integer, then press Enter key: ";

  //Read the data from standard input, keyboard
  cin>>x;

  cout<<"Key in 2nd positive integer, then press Enter key: ";
  cin>>y;

  cout<<"Key in 3rd positive integer, then press Enter key: ";
  cin>>z;

  cout<<"\nAverage for three numbers is \n";
  cout<<"\n    = ("<<x<<"+"<<y<<"+"<<z<<")/3 = "<<(x+y+z)/3<<"\n";
  
  system("pause");
  return 0;
}

----------------------------------------------------------------------------

//echo program command-line arguments
//program example
#include <stdio.h>

int main(int argc, char *argv[])
{
  int x;

  for(x = 1; x < argc; x++)
    printf("%s%s", argv[x],(x<argc-1) ? " ": "");
  printf("\n");
  return 0;
}

-------------------------------------------------------------------------

//another mathematics calculation
//compiled using VC++/VC++ .Net
#include <iostream>
using namespace std;

int main(void)
{
  float x, y, z;

  //Display for user data on standard output, screen
  cout<<"\nKey in 1st positive integer, then press Enter key: ";

  //Read the data from standard input, keyboard
  cin>>x;

  cout<<"Key in 2nd positive integer, then press Enter key: ";
  cin>>y;

  cout<<"Key in 3rd positive integer, then press Enter key: ";
  cin>>z;

  cout<<"\nAverage for three numbers is \n";
  cout<<"\n    = ("<<x<<"+"<<y<<"+"<<z<<")/3 = "<<(x+y+z)/3<<"\n";

  return 0;
}

------------------------------VC++/VC++ .Net--------------------------------

//Previous example compiled using
//VC++/VC++ .Net...using C header in C++
#include <iostream>
#include <cstdlib>
using namespace std;

int main(void)
{
float x, y, z;

//Display for user data on standard output, screen
cout<<"\nKey in 1st positive integer, then press Enter key: ";
//Read the data from standard input, keyboard
cin>>x;
cout<<"Key in 2nd positive integer, then press Enter key: ";
cin>>y;
cout<<"Key in 3rd positive integer, then press Enter key: ";
cin>>z;
cout<<"\nAverage for three numbers is \n";
cout<<"\n = ("<<x<<"+"<<y<<"+"<<z<<")/3 = "<<(x+y+z)/3<<"\n";
system("pause");
return 0;
}

-------------------------------gcc------------------------------------------

/*Simple mathematics calculation-simath.c header files.*/
#include <stdio.h>
#include <stdlib.h>

/*main() function.*/
int main()
{
  /*variables declaration*/
  int x, y, z;

  /*variables initialization*/
  /*assign 20 to variable x.*/
  /*or put the value of 20 in memory location labeled by x*/
  x = 20;
  y = 2;

  printf("Given x = 20, y = 2\n");
  printf("\nx / y = %d", x / y);

  /*do some calculation*/
  x = x * y;
  y = y + y;

  printf("\nx = x * y");
  printf("\ny = y + y");
  printf("\nNew value for x / y = %d", x / y);

  z = 20 * y / x;

  printf("\nz = 20 * (y / x) = %d\n", z);
 
  return 0;
}

============================================================================================