program2_10.c

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/* Program 2.10 Round tables again but shorter */
#include <stdio.h>

int main(void)
{
  float diameter = 0.0f;            /* The diameter of a table          */
  float radius = 0.0f;              /* The radius of a table            */
  const float Pi = 3.14159f;        /* Defines the value of Pi as fixed */

  printf("Input the diameter of the table:");
  scanf("%f", &diameter);
  radius = diameter/2.0f;
  printf("\nThe circumference is %.2f", 2.0f*Pi*radius);
  printf("\nThe area is %.2f", Pi*radius*radius);
  return 0;
}