#include<stdio.h>

/* Function declaration */
float calculateCircleArea(float);

int main() {
    float radius, area;

    printf("Enter the value of Radius: ");
    scanf("%f", &radius);

    area = calculateCircleArea(radius);

    printf("\nArea of the circle: %f", area);

    return 0;
}

/* Function definition to calculate area of circle */
float calculateCircleArea(float radius) {
    float area;
    area = 3.14 * radius * radius;
    return area;
}