/*
   testfmt01.cpp
   CIS 150
   7/1/2008
   David Klick
   
   Demonstration of printf.
*/

#include <cstdio>
#include <iostream>
using std::cin;
using std::cout;

void cont();

int main() {
   int n = 1234567;
   double x = 1234.5678;
   char c = 'W';
   char* msg = "Hello, world!";
   
   printf("printf formatting demonstration\n\n");
   printf("n = %d\nx = %f\n", n, x);
   printf("12345678901234567890\n");
   printf("%10d\n", n);
   printf("%010d\n", n);
   printf("%-10d\n", n);
   printf("%+10d\n", n);
   printf("%5d\n", n);
   printf("%X\n", n);
   printf("%o\n", n);
   printf("%12.3f\n", x);
   printf("%.2f\n", x);

   printf("The char value is '%c'\nMy message is: %s\n", c, msg);
   printf("%s\n", msg);
   printf("%.9s\n", msg);

   cont();
   return 0;
}

/*
   void cont();
   
   Arguments: none
   
   Returns: nothing
   
   Clears input buffer and pauses waiting for user 
   to press Enter.
*/
void cont() {
   if (cin.rdbuf()->sungetc() != -1 && cin.get() != '\n') cin.ignore(80,'\n');
   cout << "Press enter to continue...";
   cin.get();
}

/*
   Sample output:
   
   printf formatting demonstration

   n = 1234567
   x = 1234.567800
   12345678901234567890
      1234567
   0001234567
   1234567
     +1234567
   1234567
   12D687
   4553207
       1234.568
   1234.57
   The char value is 'W'
   My message is: Hello, world!
   Hello, world!
   Hello, wo
*/