program2_08.c

来自「C语言入门经典一书的所有代码。书上面的所有代码均在此。希望大家喜欢」· C语言 代码 · 共 22 行

/* Program 2.8 calculations on a table */
#include <stdio.h>

int main(void)
{
  float radius = 0.0f;              /* The radius of the table        */
  float diameter = 0.0f;            /* The diameter of the table      */
  float circumference = 0.0f;       /* The circumference of the table */
  float area = 0.0f;                /* The area of a circle           */
  float Pi = 3.14159265f;

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