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assignment-s-11.c

Problem Statement

Write a program that takes the radius of a circle as input, passes it to a function that computes area and circumference, and displays results in main().

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Author Amit Dutta (amitdutta4255@gmail.com)
License MIT

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Source Code

#include <stdio.h>
#include <math.h>

void area_circumference(double, double *, double *);

int main()
{
    double r, area, circumference;
    printf("Enter the radius of the circle: ");
    scanf("%lf", &r);
    area_circumference(r, &area, &circumference);
    printf("\nArea of the circle = %g", area);
    printf("\nCircumference of the circle = %g", circumference);
    return 0;
}

void area_circumference(double r, double *area, double *circumference)
{
    *area = M_PI * r * r;
    *circumference = 2 * M_PI * r;
}