Question

Please in C++ language

Write a program that reads 10,000 words into an array of strings. The program will then read a second file that contains an undetermined number of words and search the first array for each word. The program will then report the number of words in the second list that were found on the first list.

Answer 1

#include <string>
#include <iostream>
#include <stdlib.h>
#include <fstream>
#include <sstream>
#include <cctype>
using namespace std;
int countwords()
{
   ifstream fin;
   fin.open("file2.txt");
   char word[30];
   int count = 0;
   while (!fin.eof())
   {
       fin >> word;
       count++;
   }
   fin.close();
   return count;
}
int main()
{
   int no = 1000;//thousand for a thousand word file
   int num = countwords();//counts words in file 2 and saves in num;
   //******************************************************This section finds and saves total words of file 1 in string s2*************************
   ifstream file1;
   file1.open("file1.txt"); //defining the input file stream for the first file
   string s2[1000]; //array of string of 10000 elements
   string lin;
   int cnt = 0;
   while (getline(file1, lin)) //reading the first file and building the array
   {
       if (lin == "-1")
           break;
       istringstream str(lin);
       string t;
       while (getline(str, t, ' '))
       {
           //   cout << t << endl; this can be used to check if the code is reading properly or not
           if (t[0] <= 90)
               t[0] = tolower(t[0]); //make it a small letter if it is capital
           if (!isalpha(t[t.size() - 1]))
           {
               t.pop_back(); //if the character is . or , etc.
           }
           s2[cnt++] = t;
           if (cnt == no)
               break;
       }
       if (cnt == no)
           break;
   }
   file1.close();
   //******************************************************This section finds and saves total words of file 2 in string s*************************
   file1.open("file2.txt"); //defining the input file stream for the first file
   string s[num]; //array of string of 10000 elements
   string line;
   cnt = 0;
   while (getline(file1, line)) //reading the first file and building the array
   {
       if (line == "-1")
           break;
       istringstream str(line);
       string t;
       while (getline(str, t, ' '))
       {
       //   cout << t << endl; this can be used to check if the code is reading properly or not
           if (t[0] <= 90)
               t[0] = tolower(t[0]); //make it a small letter if it is capital
           if (!isalpha(t[t.size() - 1]))
           {
               t.pop_back(); //if the character is . or , etc.
           }
           s[cnt++] = t;
           if (cnt == num)
               break;
       }
       if (cnt == num)
           break;
   }
   file1.close();

   // s contains words from file 2 while s2 contains words from file 1
   //******************************************************This section compares both strings and increments count if s is found in s2*************************
   int count = 0;
   for (int i = 0; i < num; i++)
   {
       bool a = false;
       for (int j = 0; j < no; j++)
       {
           if (s[i] == s2[j])
           {
               a = true;
               break;
           }
       }
       if (a)
           count++;

   }
   cout << " count of words of file 1 in file 2 are : " << count<<endl;

   system("pause");
   return 0;
}

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