# C program to calculate distance between two points

CServer Side ProgrammingProgramming

Given with the two points coordinates and the task is to find the distance between two points and display the result.

In a two dimension plane there are two points let’s say A and B with the respective coordinates as (x1, y1) and (x2, y2) and to calculate the distance between them there is a direct formula which is given below

$$\sqrt{\lgroup x2-x1\rgroup^{2}+\lgroup y2-y1\rgroup^{2}}$$

Given below is the diagram representing two points and their differences

$$\frac{(x_2-x_1)}{(x_1,y_1)\:\:\:\:\:\:(y_2-y_1)\:\:\:\:\:\:(x_2,y_2)}$$

Approach used below is as follows

• Input the coordinates as x1, x2, y1 and y2
• Apply the formula to compute the difference between two points
• Print the distance

## Algorithm

Start
Step 1-> declare function to calculate distance between two point
void three_dis(float x1, float y1, float x2, float y2)
set float dis = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2) * 1.0)
print dis
step 2-> In main()
Set float x1 = 4
Set float y1 = 9
Set float x2 = 5
Set float y2 = 10
Call two_dis(x1, y1, x2, y2)
Stop

## Example

#include <stdio.h>
#include<math.h>
//function to find distance bewteen 2 points
void two_dis(float x1, float y1, float x2, float y2) {
float dis = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2) * 1.0);
printf("Distance between 2 points are : %f", dis);
return;
}
int main() {
float x1 = 4;
float y1 = 9;
float x2 = 5;
float y2 = 10;
two_dis(x1, y1, x2, y2);
return 0;
}

## Output

IF WE RUN THE ABOVE CODE IT WILL GENERATE FOLLOWING OUTPUT

Distance between 2 points are : 1.414214