05. How to write a C Program To calculate area and circumference of the circle

calculate the area of circle in C

C Program To calculate area and circumference of the circle.  Let's Go.

Source Code:

Code 

// C Program To calculate area and circumference of the circle

#include 
int main()
{
    float area, cir, radius;
    printf("Enter the radius: ");
    scanf("%f", &radius);

    area = 3.1416 * radius * radius;
    cir = 2 * 3.1416 * radius;

    printf("Area: %f\n", area);
    printf("Circumference: %f", cir);

    return 0;
}

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Get this Code on  Github