Question

In C programming, code the following function:

Write the function Location() that takes in two pairs of DEGREE (latitude, longitude) coordinates and returns the great-circle-distance between the points on the surface of the Earth, which is calculated using the formula:
d = R acos[ cos(latA)cos(latB)cos(lonB-lonA) + sin(latA)sin(latB) ] where (latA,lonA) and (latB,lonB) are the RADIAN coordinates for the two points, R = 6368 km is the radius of the Earth (provided in the template as a global variable), d is the distance between the points (in km), and acos() is the inverse cosine function. Note that the input (latitude, longitude) coordinates are in DEGREES, so you will need to convert from DEGREES to RADIANS in order to use the formula. As an example, a quick search for chicago latitude longitude and milwaukee latitude longitude should give you the coordinates for Chicago and Milwaukee. Then, one more search for Chicago to Milwaukee distance as the crow flies will give you the approximate distance (~131 km) that should be returned from your function when the arguments are the coordinates for the two cities.

Answer 1

// C program to calculate Distance Between Two Points on Earth
//function Location() that takes in two pairs of DEGREE (latitude, longitude) coordinates and returns the great-circle-distance between the points on the surface of the Earth
#include <stdio.h>

// Utility function for converting degrees to radians
long double toRadians(long double degee)
{
long double one_deg = (M_PI) / 180;
return (one_deg * degree);
}
  
long double location(long double latA, long double long1, long double latB, long double long2)
{
// Convert the latitudes and longitudes from degree to radians.
latA = toRadians(latA);
long1 = toRadians(long1);
latB = toRadians(latB);
long2 = toRadians(long2);
long double dlong = long2 - long1;
long double dlat = latB - latA;
long double R = 6368;
d = R* acos*[ cos(latA)*cos(latB)*cos(lonB-lonA) + sin(latA)*sin(latB) ]
// Calculate the result
return d;
}
  
int main()
{
long double latA;
long double long1 ;
long double latB ;
long double long2 ;
printf("ENTER THE LATITUDE AND LONGITUDE");
scanf("%d%d%d%d%d",&latA, &long1,&latB, &long2);
  
location(long double latA, long double long1, long double latB, long double long2) ;

}