题目一：简单输出
#include<stdio.h>
int main()
{
printf("李家豪");
return 0;
}
题目二：计算圆的面积
#define PI 3.14
double(alculatevolume lint radius);
int main()
{
int cRadius =0;
double square=0.0;
printf ("请输入圆的半径: \n");
scanf("%d";&cRadius);
square=calculatesquare (cRadius);
printf("请输入圆的面积是:%f \n",square);
return 0;
}
double calculateVolume (int radius)
{
double result = PI*radius*radius;
return result;
}