//A function declaration and the definition and use of that
function.
// demonstrates the use of function prototypes

 typedef unsigned short USHORT;
  #include <iostream.h>
 USHORT FindArea(USHORT length, USHORT width); //function
ototype

 int main()
 {
 USHORT lengthOfYard;
 USHORT widthOfYard;
 USHORT areaOfYard;

 cout << "\nHow wide is your yard? ";
 cin >> widthOfYard;
 cout << "\nHow long is your yard? ";
 cin >> lengthOfYard;

 areaOfYard= FindArea(lengthOfYard,widthOfYard);

 cout << "\nYour yard is ";: cout << areaOfYard;
 cout << " square feet\n\n";
 return 0;
 }

 USHORT FindArea(USHORT l, USHORT w)
 {
 return l * w;
 }