5.9

#define  _CRT_SECURE_NO_WARNINGS 
#include <iostream>  
#include <cstring>  
#include<string>
using namespace std;
int main()
{
	string test;
	cout << "Enter words (to stop ,type the word done)" << endl;
	int counts = 0;
	do{
		cin>>test;
		if (strcmp(test.c_str(), "done") == 0)
			break;
		else
			counts++;
	} while (true);
	cout << "You entered a total of " << counts << " words" << endl;
	return 0;
}