419.cpp

C++实训教程

//419.cpp 
#include <iostream.h>
#include <math.h>
double sroot(double x);

main()
{
	double d=200;
	cout<<"There root are:"<<sroot(d)<<endl;
	return 0;
}

double sroot(double x)
{
	return sqrt(x);
}
/*
There root are:14.1421
*/