c20b.cpp

此文件可以能帮你求体积

// c20b.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream.h>

int main(int argc, char* argv[])
{
	int n;
	cout << "please input n:";
	cin >> n;

	int aold = 1, bold = 0;
	int anew, bnew;

	for ( int i = 0; i <= n; i++ )
	{
		cout << aold << ", " << bold << endl;
		anew = 3 * aold + 2 * bold;
		bnew = aold + bold;
		aold = anew;
		bold = bnew;
	}

	return 0;
}