Question

Write a C++ program that does the following:

Read and input file containing the following

PersonAName, PersonBName, XA,YA, XB, YB

where the coordinates of PersonA in a 100 by 100 room is XA, YA

and the coordinates of PersonB is XB, YB.

Use square root function in cmath sqrt() to calculate the shortest distance between two points.

A file will be uploaded in this assignment that will list coordinates of two people.

The program should use a function call that returns the distance. If the distance is less than 6 feet, the report the case giving the names and the calculated distance.

Blackboard will be updated with a data file by Saturday morning.

Data fields

Person A Name Column 1-10

Person B Name Column 11-20

Person A X coordinate 21-23

Person A Y coordinate 25-27

Person B X coordinate 31-33

Person B Y coordinate 35-37

Attached file coordinates.txt

1---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
Apple     John      5   2     3   4
Apple     Ben       5   2     10  4
Apple     Carla     5   2     4   3
Apple     Sonny     5   2     70  55
Tom       Jerry     24  34    29  39
Tom       Tim       24  34    50  55
Tom       Tracy     24  34    88  31
Tom       Tammy     24  34    87  90
Jim       Tammy     74  89    87  90
James     Tammy     72  88    87  90
Josh      Tammy     59  24    87  90
Barry     Tom       12  78    13  65
Barry     Carla     12  78    4   3
Barry     John      12  78    3   4
Barry     Sonny     12  78    70  55
Barry     Jerry     12  78    29  39
Barry     Juan      12  78    14  80
Ann       Margaret  25  44    28  79
Ann       Silvia    25  44    25  55

Answer 1

First, you have to craete a coordinates.txt file in the same directory and add below data in it :

Apple John 5 2 3 4
Apple Ben 5 2 10 4
Apple Carla 5 2 4 3
Apple Sonny 5 2 70 55
Tom Jerry 24 34 29 39
Tom Tim 24 34 50 55
Tom Tracy 24 34 88 31
Tom Tammy 24 34 87 90
Jim Tammy 74 89 87 90
James Tammy 72 88 87 90
Josh Tammy 59 24 87 90
Barry Tom 12 78 13 65
Barry Carla 12 78 4 3
Barry John 12 78 3 4
Barry Sonny 12 78 70 55
Barry Jerry 12 78 29 39
Barry Juan 12 78 14 80
Ann Margaret 25 44 28 79
Ann Silvia 25 44 25 55

Main file code is as below :

#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;

//function to calculate distance between two persons
double calculateDistance (int XA, int XB, int YA, int YB)
{    
    return sqrt (pow (XA - XB, 2) + pow (YA - YB, 2) * 1.0);
}

int main ()
{
    string personAname, personBname;    //name of two persons
    int XA, YA, XB, YB;         //cordinates of both person A and B

    double distance;            //distance between two persons
    ifstream inputFile;         //to read input file

    inputFile.open ("coordinates.txt"); //open inputFile of given name
    cout << "Report : " << endl;

    //if inputFile opens successfully
    if (inputFile.is_open ())
    {
        //to read all the lines 4 times
        while (!inputFile.eof ())
            {
             //take data from inputFile
             inputFile >> personAname >> personBname >> XA >> YA >> XB >> YB;
    
             //function call to calculate distance
             distance = calculateDistance (XA, XB, YA, YB);
    
            //if distance < 6 then, print name of them with distance
            if (distance < 6)
            {
                cout << "Distance between " << personAname << " and " <<
                    personBname << " is : " << distance << endl;
            }
            }
      inputFile.close ();
    }
   //if inputFile does not open successfully
    else
    {
      cout << "Unable to open file";
    }
    return 0;
}

Code and output :

Input file :

If you want a report in another file then follow this code :

#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;

//function to calculate distance between two persons
double calculateDistance(int XA, int XB, int YA, int YB)
{
    return sqrt(pow(XA - XB, 2) +  pow(YA - YB, 2));
}

int main () {
    string personAname, personBname;  //name of two persons
    int XA, YA, XB, YB; //cordinates of both person A and B
   
    double distance;  //distance between two persons
    ifstream inputFile;  //to read input file
    ofstream outputfile; //to store output in outputfile
    
    inputFile.open("coordinates.txt");  //open inputFile of given name
    outputfile.open("report.txt");
    outputfile << "Report : " << endl;
   
    //if inputFile opens successfully
    if (inputFile.is_open())
    {
        //to read all the lines 4 times
        while(!inputFile.eof())
        {
            //take data from inputFile
            inputFile >> personAname >> personBname >> XA >> YA >> XB  >> YB;
            
            //function call to calculate distance
            distance = calculateDistance(XA, XB, YA, YB);
            
            //if distance < 6 then, print name of them with distance
            if(distance < 6)
            {
                outputfile << "Distance between " << personAname << " and " << personBname << " is : " << distance << endl;
            }
        }
        inputFile.close();
    }
    //if inputFile does not open successfully
    else
    {
        cout << "Unable to open file"; 
    }
    return 0;
}

report.txt file wii be created and in that data will be as below image