//  STYC++ in 21 chapter 16 
//
//  Simple I/O operations - using cin.get()
//
//

 #include <iostream.h>

int main()
{

   char stringOne[256];
   char stringTwo[256];

   cout << "Enter String One : ";
   cin.get(stringOne,256);                           // works for the line
   cout << "stringOne is : " << stringOne << endl;

   cout << "Enter String Two : ";
   cin >> stringTwo;                                 // takes up to the first whitespace
   cout << "stringTwo is : " << stringTwo << endl;

   return 0;

} // eos

//  STYC++ in 21 chapter 16 
//
//  Simple I/O operations - using cin.get() with cin.ignore
//
//

 #include <iostream.h>

int main()
{

   char stringOne[256];
   char stringTwo[256];


   cout << "Enter String One : ";
   cin.get(stringOne,256);                           // works for the line
   cout << "stringOne is : " << stringOne << endl;

   cout << "Enter String Two : ";
   cin.getline(stringTwo,256);                       // trouble with rest of input buffer   
   cout << "stringTwo is : " << stringTwo << endl;


   cout << "\n\n Let's try this again!!\n";


   cout << "Enter String One : ";
   cin.get(stringOne,256);                           // works for the line
   cout << "stringOne is : " << stringOne << endl;

   cin.ignore(255,'\n');							// clears out to the end				

   cout << "Enter String Two : ";
   cin.getline(stringTwo,256);                          // now we're good
   cout << "stringTwo is : " << stringTwo << endl;


   return 0;

} // eos

//  STYC++ in 21 chapter 16
//
//  Peek and putback funcs in cin
//
//
//

#include <iostream.h>

int main()
{

   char ch;
   cout << "Enter a phrase: ";
   
   while ( cin.get(ch) )
     {
	    if ( ch == '!' ) cin.putback('$');
		else cout << ch;

		while (cin.peek() == '#' ) cin.ignore(1,'#');
     }
 
  return 0;

}  // eos

// STYC++ in 21 chapter 16 prog 4
//
//   using cout.write
//
//

#include <iostream.h>
#include <string.h>


int main()
{

   char one[] = "One if by land";

   int fullLength = strlen(one);
   int tooShort = fullLength - 4;
   int tooLong = fullLength + 6;

   cout.write(one, fullLength) << '\n';
   cout.write(one, tooShort) << '\n';
   cout.write(one, tooLong) << '\n';

   return 0;

} //eos

//  STYC++ in 21 days  chapter 16 prog 5
//
//  Manipulating width with cout.width()
//
//

#include <iostream.h>

int main()
{

   cout << "Start >";
   cout.width(25);
   cout << 123 << "< End\n";

   cout << "Start >";
   cout.width(25);
   cout << 123 << "< Next >";
   cout << 456 << "< End\n";

   cout << "Start >";
   cout.width(4);
   cout << 123456 << "< End\n";

   return 0;

}  // eos

//  STYC++ in 21 days  chapter 16 prog 6
//
//  Old School!!  Because everyone and their mother 
//  loved the ease of printf the book points out that 
//  most implementations of C++ include (no pun intended)
//  all of the old C libraries.  Hello stdio!!  Now if we 
//  can convince them to use scanf() again we'll be OK
//
//  with the exception of my slashes for comments this 
//  is basically a C program. The first four lines 
//  constitute the first C program everyone ever wrote.
//

/*  Just to see    */

#include <stdio.h>  // feels good just to type it

int main()
{
	
	printf("%s", "hello world!\n");   

	char* phrase = "Hello again!\n";
	printf("%s", phrase);

	int x = 5;
	printf("%d\n", x);

	char* phrase1 = "Here's some values: ";
	char* phrase2 = " and also these : ";
	int y=7, z=35;
	long longVar = 36465;
	float floatVar = 8.8f;
	printf("%s %d %d %s %ld %f\n",phrase1,y,z,phrase2,longVar,floatVar);

	char* phrase3 = "Formatted: ";
	printf("%s %5d %10d %10.5f\n", phrase3,y,z,floatVar);

	return 0;  // didn't need this before the ANSI made main an int...

} // eos

// STYC++ in 21 days chapter 16 prog 7
//
//  Basic file I/O
//
//

#include <fstream.h>  // includes iostream 

int main()
{

   char filename[80];
   char buffer[255];   // for user input

   cout << "Enter filename : ";
   cin >> filename;

   ofstream fout(filename);   // open the file for writing
   fout << "This line is written directly to the file\n";

   cout << "Enter the text for the file : ";
   cin.ignore(1,'\n');  // eat the newline after the filename
   cin.getline(buffer,255);  // get the user input
   fout << buffer << '\n';   // then write it to the file
   fout.close();  // close out the write, get ready to open for input

   ifstream fin(filename);   // open for reading
   cout << "Here's the contents of the file : \n";
   char ch;
    while (fin.get(ch)) cout << ch;

   cout << "\n\n **** end of file **** \n";

   fin.close();   // always clean your room

   return 0;

} // eos

// STYC++ in 21 days chapter 16 prog 8
//
//   Writing and reading a class object to and from a file
//   Writes contents of first object into the second with file I/O
//

#include <fstream.h>

class Animal
{
public:
	Animal(int weight,long days):itsWeight(weight),DaysAlive(days){}
	~Animal(){}

	int GetWeight()const { return itsWeight; }
	void SetWeight(int weight) { itsWeight = weight; }

	long GetDaysAlive()const { return DaysAlive; }
	void SetDaysAlive(long days) { DaysAlive = days; }

private:
	int itsWeight;
	long DaysAlive;
};

int main()   // returns 1 on error
{
	char fileName[80];


	cout << "Please enter the file name: ";
	cin >> fileName;
	ofstream fout(fileName,ios::binary);
	if (!fout)
	{
		cout << "Unable to open " << fileName << " for writing.\n";
		return(1);
	}

	Animal Bear(50,100);
	fout.write((char*) &Bear,sizeof Bear);

	fout.close();

	ifstream fin(fileName,ios::binary);
	if (!fin)
	{
		cout << "Unable to open " << fileName << " for reading.\n";
		return(1);
	}

	Animal BearTwo(1,1);

	cout << "BearTwo weight: " << BearTwo.GetWeight() << endl;
	cout << "BearTwo days: " << BearTwo.GetDaysAlive() << endl;

	fin.read((char*) &BearTwo, sizeof BearTwo);

	cout << "BearTwo weight: " << BearTwo.GetWeight() << endl;
	cout << "BearTwo days: " << BearTwo.GetDaysAlive() << endl;
	fin.close();
	return 0;
}

// STYC++ in 21 days chapter 16 prog 9
//
//  Command line parameters.....
//
//  Remember that argv[0] is the name of the prog
//

#include <iostream.h>

int main(int argc, char **argv)
{
   cout << "Received " << argc << " Arguments...\n";
   for ( int i = 1; i < argc; i++ ) cout << "Arg " << i << " : " << argv[i] << endl;

   return 0;
} //eos