Question

C++ Programming

The following program reads the sentences in "fdata.txt" and stores each word in a word vector starting with the first letter.

Fill in the blanks.

#include "pch.h"

#include <iostream>

#include <algorithm>

#include <string>

#include <fstream>

using namespace std;

class SVector

{

public:

int size;

int idx;

char x;

string *sptr;

// (a)

void insert(string s);

void print();

};

SVector::SVector(char c, int size)

{

x = c;

idx = 0;

this->size = size;

//(b)

}

void SVector::insert(string s)

{

//(c)

}

void SVector::print()

{

if(idx != 0){

cout << "starting with " << x << endl;

for(int i = 0; i < idx; i++){

cout << sptr[i] << endl;

}

}

}

int main()

{

SVector *sv[26];

string word;

ifstream fin;

fin.open(".\\data\\fdata.txt");

//cout << fin << endl;

if(!fin){

cout << "file not opened" << endl;

return 0;

}

for(int i = 0; i < 26; i++){

char c = 'a' + i;

sv[i] = //(d);

}

while(true){

fin >> word;

if(fin.eof()) break;

int fc = //(e);

sv[fc]->insert(word);

}

for(int i = 0; i < 26; i++){

sv[i]->print();

}

  

return 0;

}

Answer 1

#include "pch.h"
#include <iostream>
#include <algorithm>
#include <string>
#include <fstream>

using namespace std;

class SVector
{
    public:
    int size;
    int idx;
    char x;
    string *sptr;
    SVector(char c, int size);// (a)
    void insert(string s);
    void print();
};

SVector::SVector(char c, int size)
{
    x = c;
    idx = 0;
    this->size = size;
    sptr=new string[size];
}
void SVector::insert(string s)
{
    //(c)
    idx+=1;
    sptr[idx]=s;
}
void SVector::print()
{
    if(idx != 0)
    {
        cout << "starting with " << x << endl;
        for(int i = 0; i < idx; i++)
        {
            cout << sptr[i] << endl;
        }
    }
}

int main()
{
    SVector *sv[26];
    string word;
    ifstream fin;
    fin.open(".\\data\\fdata.txt");
    //cout << fin << endl;
    if(!fin)
    {
        cout << "file not opened" << endl;
        return 0;
    }
  
    for(int i = 0; i < 26; i++)
    {
        char c = 'a' + i;
        sv[i] = new SVector(c,100);//(d);
    }
  
    while(true)
    {
        fin >> word;
        if(fin.eof()) break;
        int fc =int(word[0]-'a') //(e);
        sv[fc]->insert(word);
    }
  
    for(int i = 0; i < 26; i++)
    {
        sv[i]->print();
    }
    
    return 0;
}