C Program to Find Area And Circumference of Circle

Write a C program to find the area and circumference of a circle. The Circumference of the circle is the distance around the circle. The area of the Circle is π *r*r and the Circumstances of the Circle are 2*π*r. Calculate The Circumference of the Circle By Given Formula.

Circumference of a Circle = 2 * π * r.

Here PI (π) is a Greek Letter and r is a Radius (1/2 Of Diameter ). PI (π) = 3.141592653589793 Approx. It Is A Constant Value for more about Circumference Click Here

Area of a Circle  = π * r * r

See Also: C++ Program To Find Area And Circumference Of Circle

C Program to Find Area And Circumference of Circle

#include <stdio.h>

int main()
{
	/*write a c program to find area and circumference of circle*/
	int rad;
	float PI = 3.14, area, ci;

	printf("\nEnter radius of circle: ");
	scanf("%d", &rad);

	area = PI *rad * rad;
	printf("\nArea of Circle : %f ", area);

	ci = 2 *PI * rad;
	printf("\nCircumference of Circle : %f ", ci);

	return (0);
}

See Also: JAVA Program To Find Area And Circumference Of Circle

The Output of Area And Circumference of Circle

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