4-12.cpp

来自「为初学者提供的最佳的C++程序设计源程序库」· C++ 代码 · 共 18 行

#include<iostream.h>
#include<math.h>
double func(int,int,int,int);
double func(double,double,double,double);
void main()
{
  cout<<func(2,2,5,5)<<",";
  cout<<func(2.0,2.0,5.0,5.0)<<endl;
}
double func(int x1,int y1,int x2,int y2)
{
  return sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
}
double func(double x1,double y1,double x2,double y2)
{
  return sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
}