C - Circle

#include <stdio.h>
#include <string.h>

int main(){

float Pi, circumference, diameter, radius;
Pi = 3.14;

printf("Enter the circumference: ");
scanf("%f", &circumference);
printf("Enter the radius: ");
scanf("%f", &radius);

printf("The Circumferemce is: %f\n", circumference / Pi);
printf("The parameter is %f and the area is %f\n", 2 * Pi * radius,Pi * radius * radius);


return 0;
}