c63.cpp

此文件可以能帮你求体积

// c63.cpp : Defines the entry point for the console application.
//

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

int main(int argc, char* argv[])
{

#if 0
	ofstream out( "text1.txt" );
	if ( !out )
	{
		cout << "Cannot open text1.txt file\n";
		return -1;
	}

	out << "Radios " << 39.95 << endl;
	out << "Toastens " << 19.95 << endl;
	out << "Mixers " << 24.80 << endl;
#else
	ifstream in( "text1.txt" );
	if ( !in )
	{
		cout << "Cannot open text1.txt file.\n";
		return -1;
	}

	char item[20];
	float cost;
	cout.precision( 2 );

	in >> item >> cost;
	cout << item << " " << cost << endl;
	
	in >> item >> cost;
	cout << item << " " << cost << endl;

	in >> item >> cost;
	cout << item << " " << cost << endl;

#endif

	return 0;
}