[Solved] Distance between 2 Points with C++

Distance between 2 Points: Mrs. Anitha , our favourite Maths teacher wanted to teach her new batch students to find the distance between 2 points.
Write a program to accept 2 points and to calculate the distance between them using functions and pointers.
 
Function Specification:

float distance(int *x1, int *y1, int *x2, int *y2)
This function returns the distance between two points.
 
Input Format: 
Input consists of 4 integers.
The first 2 integers refer to x and y coordinate of Point 1
The next 2 integers refer to x and y coordinate of Point 2
 
Output Format: 
The output consists of 1 float. Display the output correct to 2 decimal places.
 
[All text in bold corresponds to input and the rest corresponds to output]

Sample Input and Output:
Enter x1
2
Enter y1
3
Enter x2
4
Enter y2
1
Distance between 2 points is 2.83
Function Definitions:

Solution

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

float distance(int *x1, int *y1, int *x2, int *y2)
{
    float d;
    d = sqrt((*x2 - *x1) * (*x2 - *x1) + (*y2 - *y1) * (*y2 - *y1));
    return d;
}

int main()
{
    int x1, y1, x2, y2;
    cout << "Enter x1\n";
    cin >> x1;
    cout << "Enter y1\n";
    cin >> y1;
    cout << "Enter x2\n";
    cin >> x2;
    cout << "Enter y2\n";
    cin >> y2;
    printf("Distance between 2 points is %.2f\n",distance(&x1, &y1, &x2, &y2));
    return 0;
}

Happy Learning – If you require any further information, feel free to contact me.