Fixed

#include<iostream>
#include<fstream>
#include<vector>
#include<string>

using namespace std;
void doc(){
    string str;
    ifstream file;
    file.open("text1.txt");
    while (!file.eof())
    {
        getline(file, str);
        cout << str << endl;
    }
    file.close();
}
void ghi(){
    string s;
    ofstream file;
    file.open("text1.txt", ios::app);
    cout << "nhap chuoi:" << endl;
    getline(cin, s);
    file << s << endl;
    file.close();
}
string chuanHoaChu(string &a){
    int l = a.size();
    string b;
    int j = 0;
    //xoa dau cách
    for (int i = 0; i < l; i++){
        if (a[i] == ' '){
            if (i != 0 && a[i - 1] != ' ')
                b += a[i];
        }
        else
            b += a[i];
    }

    int m;
    // chu in hoa va chu thuong
    for (m = 0; m < l; m++){
        if (b[m] != ' '){
            if (m == 0 || b[m - 1] == ' '){
                if (b[m] >= 97)
                    b[m] -= 32;
            }
            else
            if (b[m] < 97)
                b[m] += 32;
        }
    }

    return b;
}
void chinhSua(){
    fstream file("text1.txt");
    string line;
    while (getline(file, line))
    {
        line = chuanHoaChu(line);
        cout << line << endl;
    }
}
int soCau(ifstream  in){

    in.open("text1.txt");
    int count = 0;
    char c;
    while (!in.eof())
    {
        in >> c;
        if (c == '.' || c == '!' || c == '?')
            count++;
    }
    cout << count;
    in.close();
    return c;
}
int  soTu(){
    chinhSua();
    ifstream file;
    ofstream file1;
    file.open("text1.txt");
    int count = 0;
    string s;
    while (!file.eof()){
        file >> s;
        count++;
    }
    file.close();
    file1.close();
    cout << count << endl;
    return count;
}
string alphabet(string a){
    string *p;
    string b;
    p = new string;
    //tach tung tu cua string
    int j = 0;
    int dem = 0;
    for (int i = 0; i < a.size(); i++){
        while (a[i] != ' ')
        {
            p[i][j++] = a[i];
            dem++;
        }
        j = 0;
    }
    //so sánh alphabet
    for (int i = 0; i <dem; i++){
        if (p[i].compare(p[i + 1]) > 0){
            swap(p[i], p[i + 1]);
        }
    }
    cout << dem << endl;
    delete[]p;
    return *p;
}
int main(){


    soTu();
    system("pause");
    return 0;
}