Question

The output should be "The distance is 0" (The expected).

==================== YOUR OUTPUT =====================                                                                                                              

0001: Enter~the~x~coordinate~for~point~1:~0                                                                                                                         

0002: Enter~the~y~coordinate~for~point~1:~0                                                                                                                         

0003: Enter~the~x~coordinate~for~point~2:~0                                                                                                                         

0004: Enter~the~y~coordinate~for~point~2:~0                                                                                                                         

0005: The~distance~is~-nan   

=================== MISMATCH FOUND ON LINE 0005: ===================                                                                                                

ACTUAL  : The~distance~is~-nan                                                                                                                                      

EXPECTED: The~distance~is~0                                                                                                                                         

======================================================  

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;
float squareRoot(float s) {
float xn;
xn = s / 2.0;
int counter = 1;
while (counter <= 10) {
xn = (xn + (s/xn))/2.0;
counter = counter + 1;
}
return xn;
}
int square(int what){
int answer = what * what;
return answer;
}

float distance (int x1, int y1, int x2, int y2) {
int diffx, diffy, sqx, sqy, total;
diffx = x2-x1;
diffy = y2 - y1;
sqx = square(diffx);
sqy = square(diffy);
total = sqx + sqy;
float dist = squareRoot(total);
return dist;
}
int main() {
int x1, y1, x2, y2;
cout<<"Enter the x coordinate for point 1: ";
cin>>x1;
cout<<x1 <<endl;
cout<<"Enter the y coordinate for point 1: ";
cin>>y1;
cout<<y1 <<endl;
cout<<"Enter the x coordinate for point 2: ";
cin>>x2;
cout<<x2 <<endl;
cout<<"Enter the y coordinate for point 2: ";
cin>>y2;
cout<<y2 <<endl;
float dist = distance(x1, y1, x2, y2);
cout<<"The distance is ";
cout<<dist <<endl;
return 0;
}

Answer 1

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#include <iostream>
#include <iomanip>
#include <string>

using namespace std;
float squareRoot(float s) {
float xn;
xn = s / 2.0;
int counter = 1;
while (counter <= 10) {
xn = (xn + (s/xn))/2.0;
counter = counter + 1;
}
return xn;
}
int square(int what){
int answer = what * what;
return answer;
}

float distance (int x1, int y1, int x2, int y2) {
int diffx, diffy, sqx, sqy, total;
diffx = x2-x1;
diffy = y2-y1;
sqx = square(diffx);
sqy = square(diffy);
total = sqx + sqy;
if (total==0) return 0; //USE THIS CONDITION TO DEAL WITH TOTAL==0
float dist=squareRoot(total);
return dist;
}
int main() {
int x1, y1, x2, y2;
cout<<"Enter the x coordinate for point 1: ";
cin>>x1;
cout<<x1 <<endl;
cout<<"Enter the y coordinate for point 1: ";
cin>>y1;
cout<<y1 <<endl;
cout<<"Enter the x coordinate for point 2: ";
cin>>x2;
cout<<x2 <<endl;
cout<<"Enter the y coordinate for point 2: ";
cin>>y2;
cout<<y2 <<endl;
float dist = distance(x1, y1, x2, y2);
cout<<"The distance is ";
cout<<dist <<endl;
return 0;
}