作业一：名字代码
#include <stdio.h>
int main ()
{
printf("周小伶");
return 0 ;
}
作业二：圆的代码
#include <stdio.h>
#define PI 3.14
double calculateArea (int radius);
int main ()
{
int cRadius =0;
double Area =0.0;
printf("请输入圆的半径：\n");
scanf("%d",&cRadius);
Area=calculateArea(cRadius);
printf("圆的面积是：%f\n", Area);
return 0 ;
}
double calculateArea (int radius)
{
double result = PI*radius*radius;
return result;
}