Source for Where Is It

// GRIDLOC.CPP is a program to convert bearing and range from a known

location 

// and return an X,Y coordinate for using the EOSS grid.



#include 

#include 

#include 

 

void main()

{

               const float pi=3.141592654;   // Constant PI

               float KX=0;                    // Known X coordinate

               float KY=0;                                   // Known Y

               coordinate

               float x=0;                                    // Calculated x

               coordinate

               float y=0;                                    // Calculated y

               coordinate

               float range=0;                                // Range from

               Known position

               float bearing=0;                              // Bearing from

               Known position

               char kpos_ok;                  // Known position O.K.

               char do_again = 'n';           // Another way to define "n"

               char new_pos = 110;            // 110 is ASCII "n".



      do {

                              do {

                                             cout << "Enter the known position in the form of X Y.\n"; cin>> KX >> KY; // input known

                                             position in the form of X Y.

                                             cout << "\nThe position you entered is " << KX << "," << KY; cout << " is this correct? y or n\n"; cin>> kpos_ok; // input y for

                                             yes or anything else for no.

                              }while (kpos_ok != 'y'); // enter y to fall

                              through loop.

                              do {           

                                             cout <<"enter range and bearing from the known position. \n"; cin>> range >> bearing; //

                                             input range and bearing

                                             x=range * (cos((90-bearing) *

                                             pi/180)) + KX;

                                             y=range * (sin((90-bearing) *

                                             pi/180)) + KY;

                                             cout.precision (2); // set

                                             output to two numbers. ie: 6.3

                                             or 38.

                                             cout << "\nThe grid location is " << x << ", " << y; // EOSS grid location cout << "\nDo again with same know position? "; cin>> do_again; // input y or Y

                                             for yes or anything else for no.

                              }while (do_again == 'y' || do_again == 'Y'); //

                              enter y to go through again.

                                             cout << "\nChange known position? "; cin>> new_pos;               //

                                             input y or Y for yes or anything

                                             else for no.

               } while (new_pos == 'y' || new_pos == 'Y'); // a y takes you

               back to start. Else quit.

               cout << "\nProgram Ended........."; }