209.cpp

来自「C++实训教程」· C++ 代码 · 共 19 行

//209.cpp Using function with default parameters
#include <iostream.h>
#include <math.h>
float Dist(float z,float y=0,float x=0);
main(void)
{
	cout << Dist(0,3,4) << "  ";
	cout << Dist(3,0,0)<< "  ";
	cout << Dist(3,0)<< "  ";
	cout << Dist(3)<< endl;
	return 0;
}
float Dist(float z,float y,float x)
{
	return(sqrt(z*z+y*y+x*x));
}
/*
5  3  3  3
*/