# Program in C that reads radius of a circle and calculates its area

The below program in C will accepts the radius of a circle from the user and calculates its area and displays the calculated result to the user on the screen.

**Explanation**

*Step 1:* Read the radius

*Step 2:* Calculate the area by applying the formula: Area = (pi)*r^{2} = 3.14 * r^{2}

#include<stdio.h> #include<conio.h> void main() { float radius, area; printf("Radius = ?"); scanf("%f", &radius); //calculate the area area = 3.14 * radius * radius; //display the calculated result printf("Area = %f", area); getch(); }

**Output:**

Radius = ?5 Area = 78.500000

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