前言:(内容仅供分享和参考)
输入圆环内半径和圆环外半径即可获得圆环面积,是不是很高级(雾)
bigR和smallR实际上都可以用r和R表示,没必要输的那么标准,但说明还是要说明清楚的。
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编程代码:(用到的软件:VisualStudio)
#include <stdio.h>
#define PI 3.14
double area(double bigR, double smallR);
int main(void)
{
double bigR, smallR;
double a;
printf("请输入外圆环的半径和内圆环的半径:");
scanf_s("%lf %lf", &bigR, &smallR);
a = area(bigR, smallR);
printf("圆环面积是:%.2lf", a);
}
double area(double bigR, double smallR)
{
double areaBig, areaSmall;
double area;
areaBig = bigR * bigR * PI;
areaSmall = smallR * smallR * PI;
area = areaBig - areaSmall;
return area;
}
#include <stdio.h>
#define PI 3.14
double area(double bigR, double smallR);
int main(void)
{
double bigR, smallR;
double a;
printf("请输入外圆环的半径和内圆环的半径:");
scanf_s("%lf %lf", &bigR, &smallR);
a = area(bigR, smallR);
printf("圆环面积是:%.2lf", a);
}
double area(double bigR, double smallR)
{
double areaBig, areaSmall;
double area;
areaBig = bigR * bigR * PI;
areaSmall = smallR * smallR * PI;
area = areaBig - areaSmall;
return area;
}
========================================================================
结果图:
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