/*
   testfunc02.cpp
   CIS 150
   6/9/2005
   David Klick
   
   This program demonstrates how to create
   and call a function that has an argument.
*/

#include <iostream>
#include <iomanip>
using std::cout;
using std::endl;
using std::fixed;
using std::setprecision;

void display(double x);  // function prototype 

int main(void) {
   double num = 9.87654321;
   display(num);         // call function using variable
   display(5.5555);      // call function using value
   display(2.0/3.0);     // call function using expression
   return 0;
}

/*
   This function displays a double in fixed format with
   two digits after the decimal point.
*/
void display(double d) {
   cout << fixed << setprecision(2) << d << endl;
   return;        // optional since no value is returned
}