#include <iostream>
using namespace std;
 
int area (int l, int w); // function prototype
 
int volume (int l, int w, int d); // function prototype
 
int main (int argc, char* argv[]) {
 
      int length, width, depth; // parameters for the areas and volumes
 
      int result; //result is output
 
      cout << endl;
 
      // read in the values of length, width, and depth
 
While (?)
{
      cout << "If you want the result of the calculation to be an area,";
      cout << endl;
 
      cout << "place a 0 in the depth parameter ";
      cout << endl << endl;
 
      cout << "Enter a length (postive integer): ";
      cin >> length;
 
      cout << "Enter a width (postive integer): ";
      cin >> width;
 
      cout << "Enter a depth (postive integer): ";
      cin >> depth;
 
      cout << endl;
 
      if (depth == 0) {
            result = area (length, width);
            cout << "With a length of " << length;
            cout << " and a width of " << width;
            cout << " the area is " << result << endl;
      } else {
            result = volume (length, width, depth);
            cout << "With a length of " << length;
            cout << " a width of " << width;
            cout << " and a depth of " << depth;
            cout << " the volume is " << result << endl;
 
      } // end if
 
      } // end loop
      return 0;
 
} // end main function
 
int area (int l, int w) {
 
      int result;
      result=area(l,w);
      return result;
 
} // end area function
 
int volume (int l, int w, int d) {
 
int result;
result=volume(l,w,d);
return result;
 
} // end volume function

while (input >= 0)