vc0405.cpp

来自「由吕军等人著的《Visual C++ 与面向对象程序设计教程》课后习题的源代码」· C++ 代码 · 共 13 行

// Example 4-5：求三角形面积
#include <iostream.h>
#include <math.h>
void main()
{
	double a, b, c, s, area;
	cout << "please input a, b, c =?";
	cin >> a >> b >> c;
	s = (a+b+c)/2;
	area = sqrt(s*(s-a)*(s-b)*(s-c));
	cout << "area = " << area;
}