i need help in c++ program I'm asked to make a phone book which can sort all the names in it alphabetically plllllz i need help

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Why don't you show us what you have started and we'll go from there. If you have nothing started start and you'll be more likely to get help.

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If you reading the information from phonebook why are you asking user to input it ?

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Why don't you show us what you have started and we'll go from there. If you have nothing started start and you'll be more likely to get help.

i don't have a clue a bout the sort i've tried many functions from the internet but they didn't work but i've began in the other function in the phone book and that is what i get thnx

#include<iostream>
#include<string>
#include<fstream>
#include<algorithm>
using namespace std;
fstream phonebook;
struct phone
{
     char word[50]; 
    char fword[50];
    fstream edit;
    int id;
    string fname;
    string sname;
    string lname;
    int phonenumber;
    int mobilenumber;
    string email;
};

phone info;
    char d,f,r;
    string c,g;
   
int add()
    {
         phonebook.open("c:\\c\\phonebook.txt",ios::out|ios::app);
cout<<"enter the first name\n";
    cin>>info.fname;
    cout<<"enter the second name\n";
    cin>>info.sname;
    cout<<"enter the last name\n";
    cin>>info.lname;
    cout<<"enter the phone number\n";
    cin>>info.phonenumber;
    cout<<"enter the moile number\n";
    cin>>info.mobilenumber;
    cout<<"enter the e-mail\n";
    cin>>info.email;
    
    phonebook<<info.fname<<"\t "<<info.sname<<"\t "<<info.lname<<"  \t  "
    <<info.phonenumber<<"  \t  "<<info.mobilenumber<<" \t  "<<info.email<<endl;;
    cout<<endl;
    phonebook.close();
    
       return 0;
}

int getdisplay()
{
    
   cout<<"if u wanna display all contacts press 'a'\n"<<"if u wanna display contacts begining with specific letter press 'c'\n";
          cin>>r;
         phonebook.open("c:\\c\\phonebook.txt",ios::in);
         phonebook.clear();
         switch(r)
         {
                   
      case 'a':
           {  
               while(!phonebook.eof())
               {
         getline(phonebook,c);
         cout<<c<<endl;
         }
         phonebook.close();
         break;
         }
         case 'c':
              {
              
              phonebook.open("c:\\c\\phonebook.txt",ios::in);
                    phonebook>>c;
                    cout<<"enter the wanted letter";
                    cin>>g;
//                    getdisplay;
                    cout<<"dsucyeehr";
                    
                              
         phonebook.close();
            break;
         }
         }
         return 0;
         
         }
void getsearch()
{
cout << "Enter your contact:"<<endl;
                      
                       cin >> info.word; 
                       phonebook.open("c:\\c\\phonebook.txt",ios::in); 
                       phonebook.clear();
                       int counter =0;
                        while (!phonebook.eof()){
                              phonebook >> info.fword; 
                              int j=strcmp(info.fword,info.word); 
                              if (j==0){
                                        cout << "contact was found in the file :)"<<endl;
                                        cout<< info.word << endl;
                                        counter ++; 
                                        phonebook>>info.fname>>info.sname>>info.lname>>info.phonenumber>>info.mobilenumber>>info.email;
               cout<<info.fword<<" "<<info.fname<<" "<<info.sname<<" "<<info.lname
               <<" "<<info.phonenumber<<" "<<info.mobilenumber<<" "<<info.email;
                                        break; 
                                        }
                              } 
                             if (counter == 0) 
                       cout << "contact was not found in the file :(" << endl;
                    
                         
                       phonebook.close();
                       
                        
                       }
                       
                       
                       
                    
                    
                        
int main()
{
   
   
    while(1)
    {
            
            
    cout<<endl<<"1-Adding new contacts"<<endl
	<<"2-Displaying contacts information"<<endl
	<<"3-Searching for a contact"<<endl
	<<"4-Deleting a contact"<<endl
	<<"5-Modifying a contact information"<<endl
	<<"6-Sort the contacts by name"<<endl
    <<"7-exit"<<endl<<endl;
    cout<<"enter your choice"<<endl; 
    cin>>d;
    switch(d)
    
    {
              case '1':
                   
                   {
                   add();
                    cout<<"if u wann add another contact press 'y' if not press 'n'";
                     cin>>f;
                      if(f=='y')
                      
                      {
                       add();
              }
             
              break;
}
case '2':
     {
      getdisplay();
         break;
         }
         case '3':
              {
            getsearch();
          
              break;         
    
              }
              case '4':
                   {
                      break; 
                       }
              case '5':
                   {
                   break;
                   }
                   case '6':
                        {
                            
                            break;
                        }
                   case '7':
                        {
                            return 0;
                            break;
                            }
         }
         }

    system ("pause");
    return 0;
}

If you reading the information from phonebook why are you asking user to input it ?

that is one of the function that if the user want to add another contact to the original phone book which already contain names

i've edited the code and made a function for sorting but now i need the modifiy function how can i modify a contact that's my code hope u can help

#include<iostream>

#include <cstring>
#include<string>
#include <iomanip>
#include <map>
#include<fstream>
#include<algorithm>
#include <vector>
//#include <stdlio>
using namespace std;
fstream phonebook;

       
struct phone
{
     char word[50]; 
    char fword[50];
    fstream edit;
    int id;
    string fname;
    string fname2;
    string sname;
    string lname;
    int phonenumber;
    int mobilenumber;
    string email;
};
 
phone info;

    char d,f,r;
    string c,g;
 void sortingtany2()
{
      vector<string> sV;
    phonebook.open("c:\\c\\phonebook.txt");
  string word;
  
  // separates words in file at a whitespace
  // and loads a string vector
  while(getline(phonebook,word))
    sV.push_back(word);
     
  cout << "Unsorted words:" << endl;
  for(int i = 0; i < sV.size(); i++)
    cout << sV[i] << endl;
  
  cout << "---------------" << endl;
    
  cout << "Sorted words:" << endl;
  sort( sV.begin(), sV.end() );
  for(int i = 0; i < sV.size(); i++)
   {
          cout << sV[i] << endl; 
           phonebook<<sV[i];
}
}
void edit()
    {
         
  string c;
  char c1;
  cout << "Please type some lines of text. Enter a period to finish:\n";
  do {
    c=cin.get();
    phonebook>>info.fname;
    if(c==info.fname)
    {
       info.fname.clear();
       }              
    
  
 }  while (c1!='.');
  
}

void add()
    {
         phonebook.open("c:\\c\\phonebook.txt",ios::out|ios::app);
cout<<"enter the first name\n";
    cin>>info.fname;
    cout<<"enter the second name\n";
    cin>>info.sname;
    cout<<"enter the last name\n";
    cin>>info.lname;
    cout<<"enter the phone number\n";
    cin>>info.phonenumber;
    cout<<"enter the moile number\n";
    cin>>info.mobilenumber;
    cout<<"enter the e-mail\n";
    cin>>info.email;
    
    phonebook<<info.fname<<"\t "<<info.sname<<"\t "<<info.lname<<"  \t  "
    <<info.phonenumber<<"  \t  "<<info.mobilenumber<<" \t  "<<info.email<<endl;;
    cout<<endl;

  

    phonebook.close();
    

}

void getdisplay()
{
    
   cout<<"if u wanna display all contacts press 'a'\n"<<"if u wanna display contacts begining with specific letter press 'c'\n";
          cin>>r;
         phonebook.open("c:\\c\\phonebook.txt",ios::in);
         phonebook.clear(); 
         switch(r)
         {
                   
      case 'a':
           {  
               while(!phonebook.eof())
               {
         getline(phonebook,c);
         cout<<c<<endl;
         }
         phonebook.close();
         break;
         }
         case 'c':
              {
              
              char le;
              phonebook.open("c:\\c\\phonebook.txt",ios::in);
                   cout<<"enter the wanted letter";
                    cin>>le;
                    phonebook.seekg(0,ios::beg);
                      while(getline(phonebook ,c))
                      {
                                       cout<<"zashgdas";      
                    
                      for(int i=0;i<c.length();i++)
                      {
                              cout<<"afa";
                       if(c[0]>=le)
                      {
                                  cout<<c;
                                  cout<<"hasgdajk";
                                  break;
                                  }
                                  }
                                  }       
         phonebook.close();
            break;
         }
         }
       
         }
void getsearch()
{
                  cout << "Enter your contact:"<<endl;
                      
                       cin >> info.word; 
                       phonebook.open("c:\\c\\phonebook.txt",ios::in);
                       phonebook.clear(); 
                       int counter =0;
                        while (!phonebook.eof())
                        {
                             phonebook >> info.fword; 
                              int j=strcmpi(info.fword,info.word); 
                              if (j==0)
                              {
                                        cout << "contact was found in the file :)"<<endl;
                                        cout<< info.word << endl;
                                        counter ++; 
                                        break; 
                                        }
                              } 
                             if (counter == 0) 
                       cout << "contact was not found in the file :(" << endl;
                         
                         phonebook>>info.fname>>info.sname>>info.lname>>info.phonenumber>>info.mobilenumber>>info.email;


               cout<<info.fword<<" "<<info.fname<<" "<<info.sname<<" "<<info.lname
               <<" "<<info.phonenumber<<" "<<info.mobilenumber<<" "<<info.email<<endl;
                       phonebook.close();
                       
                  
                       }
                       
                       
                       
void getmodify()
{
   
                       cout << "Enter your letter:"<<endl;
                       cin >> info.word; 
                       phonebook.open("c:\\c\\phonebook.txt",ios::in); 
                       int counter =0;
                        while (!phonebook.eof()){
                              phonebook >> info.fword; 
                              int j=strcmpi(info.fword,info.word); 
                              if (j==0){
                                        cout << "contact was found in the file :)"<<endl;
                                        cout<< info.word << endl;
                                        counter ++; 
                                         info.word==NULL;
                                       
                                         
                                        break; 
                                        }
                                     
                                  
                                 
                              } 
                             if (counter == 0) 
                       cout << "contact was not found in the file :(" << endl;
                                                  phonebook.close();
                       
                       
                       
                       }
int getdel()
{
    char hot;
    phonebook.open("c:\\c\\phonebook.txt",ios::in);
    ofstream myfile("c:\\c\\1.txt",ios::out);
    cout<<"ur u sure u want to delete all contact(y/n)"<<endl;
    cin>>hot;
    if (hot=='y')
    {
    phonebook>>info.fname;
      while( getline(phonebook,info.fname))
    {
         cout << info.fword<< "\n";
    }
    phonebook.close();
    myfile.close();    
    // delete the original file
    remove("c:\\c\\phonebook.txt");
    // rename old to new
    rename("c:\\c\\1.txt","c:\\c\\phonebook.txt");
}
     else
         {
              cout<<"the contact still as it is"<<endl;
              }

    // all done!
    return 0;
}
void del()
{
     string del;
                  cout << "Enter your contact:"<<endl;
                      
                       cin >> info.word; 
                       phonebook.open("c:\\c\\phonebook.txt",ios::in);
                       phonebook.clear(); 
                       int counter =0;
                        while (!phonebook.eof())
                        {
                             phonebook >> info.fword; 
                              int j=strcmpi(info.fword,info.word); 
                              if (j==0)
                              {
                                        cout << "contact was found in the file :)"<<endl;
                                        cout<< info.word << endl;
                                        counter ++; 
                                        break; 
                                        }
                              } 
                             if (counter == 0) 
                       cout << "contact was not found in the file :(" << endl;
                         
                         phonebook>>info.fname>>info.sname>>info.lname>>info.phonenumber>>info.mobilenumber>>info.email;
                         info.fname.clear();
                         info.fname=' ';
                         
                         
                      
                         phonebook<<info.fname;


              
                       phonebook.close();
                       
                  
                       }
                       
                       
                       

                    
                              
                        
int main()
{
   
   
    while(true)
    {
            
            
    cout<<endl<<"1-Adding new contacts"<<endl
	<<"2-Displaying contacts information"<<endl
	<<"3-Searching for a contact"<<endl
	<<"4-Deleting a contact"<<endl
	<<"5-Modifying a contact information"<<endl
	<<"6-Sort the contacts by name"<<endl
    <<"7-exit"<<endl<<endl;
    cout<<"enter your choice"<<endl; 
    cin>>d;
    switch(d)
    
    {
              case '1':
                   
                   {
                   
                   add();
                    cout<<"if u wann add another contact press 'y' if not press 'n'";
                     cin>>f;
                      if(f=='y')
                      
                      {
                       add();
              }
             
              break;
              }
              case '2':
               {
                getdisplay();
                   break;
                     }
                case '3':
               {
            getsearch();
          
              break;         
    
              }
              case '4':
                   {
                       int e;
                       cout<<"enter '1'if u want to delete all contact"<<endl
                       <<"enter '2' if u want to delete specific contact"<<endl;
                       cin>>e;
                       switch (e)
                       {
                              case 1:
                                   {
                                       
                                       getdel();
                                       break;
                                       }
                                       case 2:
                                            {
                                              del();  
                                                break;
                                                }
                                                }         
                       
                      break; 
                       }
              case '5':
                   {
             
                  getmodify();
                   break;
                   }
                   case '6':
                        {
                         
                        sortingtany2();
	                     break;
                            
                            } 
                        
                   case '7':
                        {
                            return 0;
                            break;
                            }
                     
         }
         }

    system ("pause");
    return 0;
}
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