/**
 * cond.cpp       
 * 19-mar-2007/sklar
 *
 * demonstrates the use of
 * -- the cmath library
 * -- assignment operator
 * -- conditional operator
 *
 */

#include <stdlib.h>
#include <time.h>
#include <iostream>
#include <cmath>
using namespace std;


int main() {
  double x;
  double y;
  bool negative;

  srand( time( NULL ));
  x = rand() % 360;
  x *= M_PI / 180;
  cout << "x=" << x << endl;

  y = sin( x );
  cout << "y=" << y << endl;

  // here's the if-else way
  /*
    if ( y < 0 ) {
      negative = true;
    }
    else {
      negative = false;
    }
  */

  // here's the use of the "conditional operator"
  negative = ( y < 0 ) ? true : false; 


  if ( negative ) {
    cout << "negative sin\n";
  }
  else {
    cout << "positive sin\n";
  }


} // end of main()