C++ LENGTH OF LINE PROGRAM LAB REPORT 1) Enter your name, student ID, platform (

Question

C++ LENGTH OF LINE PROGRAM LAB REPORT 1) Enter your name, student ID, platform (Mac or PC) and date Name and Student ID: Class: CIS054 C/C++ Programming Platform (Mac or PC): Date: DESCRIPTION: Create a program that uses a function to determine the length of a line by inputting the X,Y coordinates of the line endpoints. Show the result with a precision of four decimal places. The function prototype is to be specified as follows: double LengthOfLine (double X1, double Y1, double X2, double Y2); // returns length of line

Use pythagorean theorem to compute the length of the line

Hypotenuse = squr (x^2 + y^2)

This is my progress so far but a par of it is wrong.

/

// main.cpp

// Lentgh if a line

//

// Created by Erol Alvarez on 10/15/17.

// Copyright © 2017 Erol Alvarez. All rights reserved.

//

#include <iostream>

#include <cmath>

using namespace std;

double LengthOfLine (double X1, double Y1, double X2, double Y2, double length);

int main(int argc, const char * argv[])

{

double X1, X2, Y1, Y2, length;

cout << "Enter X1 X2 Y1 Y2 separated by spaces: ";

cin >> X1 >> X2 >> Y1 >> Y2;

length = LengthOfLine (X1, Y1, X2, Y2);

cout << "The length of the line is " << length << endl;

return 0;

}

double LengthOfLine (double X1, double Y1, double X2, double Y2)

{

double a, b, c; // c is the computed length of the line

a = X2 - X1;

b = Y2 - Y1;

c = sqrt(a*a + b*b);

return c;

}

Explanation / Answer

No the code is correct only printing of answer is incorrect. Use printf for that :

CODE :

#include <iostream>
#include <cmath>
using namespace std;
double LengthOfLine(double X1, double Y1, double X2, double Y2, double length);
double LengthOfLine(double X1, double Y1, double X2, double Y2)
{
double a, b, c; // c is the computed length of the line
a = X2 - X1;
b = Y2 - Y1;
c = sqrt(a*a + b*b);
return c;
  
}
int main(int argc, const char * argv[])
{

double X1, X2, Y1, Y2, length;
cout << "Enter X1 X2 Y1 Y2 separated by spaces: ";
cin >> X1 >> X2 >> Y1 >> Y2;
length = LengthOfLine(X1, Y1, X2, Y2);

printf("The length of the line is %0.4f", length);
return 0;
}

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