13v.cpp

《C/C＋＋程序设计导论（第二版）》一书的程序源文件

// Perform a binary search of the names in file "namelist.txt"
#include <iostream>
#include <fstream>
#include <string>
using namespace std;

const int NUMNAMES = 10;
int Find (String, String[], int, int);

void main()
{	string name_array[NUMNAMES], name;
	ifstream infile ("namelist.txt", ios::in);
	int n;
	for (n=0; n<NUMNAMES; n++)
		infile >> name_array[n];				// read in names
	cout << " enter name to be found: ";
	cin >> name;					// get name for search..
	cout << name << " found at index "
		<< Find (name, name_array, 0, NUMNAMES-1);
}