本题要求实现一个常用圆形体体积的计算器。计算公式如下:
在每次计算之前,要求输出如下界面:
1-Ball
2-Cylinder
3-Cone
other-Exit
Please enter your command:
然后从标准输入读进一个整数指令。
如果读入的指令是1或2或3,则执行相应的体积计算;如果是其他整数,则程序结束运行。
Please enter the radius:
,然后读入球体半径,完成计算;Please enter the radius and the height:
,然后读入底圆半径和高,完成计算;Please enter the radius and the height:
,然后读入底圆半径和高,完成计算。计算结果在一行内输出,保留小数点后两位。
1
2
3
2.4 3
0
1-Ball
2-Cylinder
3-Cone
other-Exit
Please enter your command:
Please enter the radius:
33.51
1-Ball
2-Cylinder
3-Cone
other-Exit
Please enter your command:
Please enter the radius and the height:
18.10
1-Ball
2-Cylinder
3-Cone
other-Exit
Please enter your command:
#include
#include //pow函数;
#define pi 3.1415926535 //定义宏;
int main()
{int n;double r,h;while(1){printf("1-Ball\n2-Cylinder\n3-Cone\nother-Exit\nPlease enter your command:\n");scanf("%d",&n);switch(n){case 1:{printf("Please enter the radius:\n");scanf("%lf",&r);printf("%.2lf\n",4.0*pi*pow(r,3)/3);break;}case 2:{printf("Please enter the radius and the height:\n");//不同情况下的输出;scanf("%lf%lf",&r,&h);printf("%.2lf\n",pi*pow(r,2)*h);break;}case 3:{printf("Please enter the radius and the height:\n");scanf("%lf%lf",&r,&h);printf("%.2lf\n",pi*pow(r,2)*h/3);break;}default:return 0;}}
}