2_6f.cpp
资源名称:c.rar [点击查看]
上传用户:puke2000
上传日期:2022-07-25
资源大小:912k
文件大小:1k
源码类别:
C#编程
开发平台:
Visual C++
- //2_6f
- #include <iostream.h>
- #include <iomanip.h>
- #include <math.h>
- float area(float a, float b, float c); //函数声明
- void main()
- {
- float a,b,c;
- cout <<"please input 3 sides of one triangle:n";
- cin >>a >>b >>c; //输入时以空格作为数据间隔
- float result = area(a,b,c); //函数调用
- cout <<setiosflags(ios::fixed) <<setprecision(2)
- <<"a=" <<setw(7) <<a
- <<",b=" <<setw(7) <<b
- <<",c=" <<setw(7) <<c <<endl;
- cout <<"area of triangle is " <<setw(10)
- <<setprecision(5) <<result <<endl;
- }
- float area(float a, float b, float c) //函数定义
- {
- float s=(a+b+c)/2;
- return sqrt(s*(s-a)*(s-b)*(s-c));
- }