`luc015.c`¶

Problem Statement

Given three points (x1, y1), (x2, y2), and (x3, y3), write a program to check if the three poins fall on one straight line.

Metadata¶

Property	Detail
Author	Amit Dutta (amitdutta4255@gmail.com)
License	MIT
Difficulty	Beginner (index: 1 / 10)

Concepts¶

Beta Feature

This concept detection system is still in beta and may occasionally show incorrect or incomplete results.

Sorting (possible)
Iteration

Actions¶

Raw View on GitHub

You can print or save this file by opening Raw and using your browser.

Source Code¶

#include <stdio.h>
#include <math.h>
#define EPSILON 0.0001
// Define a small tolerance value (EPSILON) for safe floating-point comparison
// This is critical because of minor rounding errors in computer arithmetic.
int main()
{
    double x1, x2, x3, y1, y2, y3, area;
    printf("Enter the point A(x1, y1) : ");
    scanf("%lf %lf", &x1, &y1);
    printf("Enter the point B(x2, y2) : ");
    scanf("%lf %lf", &x2, &y2);
    printf("Enter the point C(x3, y3) : ");
    scanf("%lf %lf", &x3, &y3);
    area = 0.5 * ((x1 * (y2 - y3)) + (x2 * (y3 - y1)) + (x3 * (y1 - y2)));
    if (fabs(area) < EPSILON) // abs() for integer, fabs() for float, double
        printf("\nA(%g, %g), B(%g, %g) and C(%g, %g) points fall on one straight line.", x1, y1, x2, y2, x3, y3);
    else
        printf("\nA(%g, %g), B(%g, %g) and C(%g, %g) points doesn't fall on one straight line.", x1, y1, x2, y2, x3, y3);
    return 0;
}

Explanation¶

Explain with AI

Copy the prompt below and paste it into any AI assistant.

    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (luc015.c):

    #include <stdio.h>
    #include <math.h>
    #define EPSILON 0.0001
    // Define a small tolerance value (EPSILON) for safe floating-point comparison
    // This is critical because of minor rounding errors in computer arithmetic.
    int main()
    {
        double x1, x2, x3, y1, y2, y3, area;
        printf("Enter the point A(x1, y1) : ");
        scanf("%lf %lf", &x1, &y1);
        printf("Enter the point B(x2, y2) : ");
        scanf("%lf %lf", &x2, &y2);
        printf("Enter the point C(x3, y3) : ");
        scanf("%lf %lf", &x3, &y3);
        area = 0.5 * ((x1 * (y2 - y3)) + (x2 * (y3 - y1)) + (x3 * (y1 - y2)));
        if (fabs(area) < EPSILON) // abs() for integer, fabs() for float, double
            printf("\nA(%g, %g), B(%g, %g) and C(%g, %g) points fall on one straight line.", x1, y1, x2, y2, x3, y3);
        else
            printf("\nA(%g, %g), B(%g, %g) and C(%g, %g) points doesn't fall on one straight line.", x1, y1, x2, y2, x3, y3);
        return 0;
    }

luc015.c¶