`luc002.c`¶

Problem Statement

The length and breadth of a rectangle and radius of a circle are input through the keyboard. Write a program to calculate the area and perimeter of the rectangle, and the area and circumference of the circle.

Metadata¶

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

Concepts¶

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Recursion
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Source Code¶

#include <stdio.h>
#include <math.h>
int main()
{
    double len, bre, r, area_r, per, area_c, cir;
    printf("Enter the length and breadth of the rectangle : ");
    scanf("%lf %lf", &len, &bre);
    printf("Enter the Radius of the circle : ");
    scanf("%lf", &r);
    area_r = len * bre;
    per = 2 * (len + bre);
    area_c = M_PI * r * r;
    cir = 2 * M_PI * r;
    printf("\nArea of Rectangle       : %lf"
           "\nPerimeter of Rectangle  : %lf"
           "\nArea of Circle          : %lf"
           "\nCircumference of Circle : %lf",
           area_r, per, area_c, cir);
    return 0;
}

Explanation¶

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    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 (luc002.c):

    #include <stdio.h>
    #include <math.h>
    int main()
    {
        double len, bre, r, area_r, per, area_c, cir;
        printf("Enter the length and breadth of the rectangle : ");
        scanf("%lf %lf", &len, &bre);
        printf("Enter the Radius of the circle : ");
        scanf("%lf", &r);
        area_r = len * bre;
        per = 2 * (len + bre);
        area_c = M_PI * r * r;
        cir = 2 * M_PI * r;
        printf("\nArea of Rectangle       : %lf"
               "\nPerimeter of Rectangle  : %lf"
               "\nArea of Circle          : %lf"
               "\nCircumference of Circle : %lf",
               area_r, per, area_c, cir);
        return 0;
    }

luc002.c¶