C++ Exercises: Compute the distance between two points on the surface of earth

C++ Basic: Exercise-59 with Solution

Write a program in C++ to compute the distance between two points on the surface of earth.

Pictorial Presentation:

Sample Solution:

C++ Code :

#include <iostream>
#include <math.h>
using namespace std;
 
int main()
{
double d,la1,la2,lo1,lo2,er,r;
    cout << "\n\n Print the the distance between two points on the surface of earth:\n";
	cout << "-----------------------------------------------------------------------\n";
	cout << " Input the latitude of coordinate 1: ";
	cin>> la1;
	cout << " Input the longitude of coordinate 1: ";
	cin>> lo1;
	cout << " Input the latitude of coordinate 2: ";
	cin>> la2;
	cout << " Input the longitude of coordinate 2: ";
	cin>> lo2;	
	r=0.01745327; //Pi/180=3.14159/180
	la1=la1*r;
	la2=la2*r;
	lo1=lo1*r;
	lo2=lo2*r;
	er=6371.01; //Kilometers
	d=er * acos((sin(la1)*sin(la2)) + (cos(la1)*cos(la2)*cos(lo1 - lo2)));
	cout<<" The distance between those points is: "<<d<<"\n";
}

Sample Output:

 Print the the distance between two points on the surface of earth:    
-----------------------------------------------------------------------
 Input the latitude of coordinate 1: 25                                
 Input the longitude of coordinate 1: 35                               
 Input the latitude of coordinate 2: 35.5                              
 Input the longitude of coordinate 2: 25.5                             
 The distance between those points is: 1480.08
 

Flowchart:

C++ Code Editor:

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