problem with my programming assignment

#include <cstdlib>
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
//function prototype
int add_records();
int get_records();
int user_choice();
int search_records();
string buffer;
//structure
struct tabledata//creating linked list
{
int stud_id;//will store information
char name[100];//will store information
float code;//will store information
tabledata *next;//the reference to the next node
};
typedef struct tabledata node;
node *head,*current,*temp;

int main(int argc, char *argv[])
{
    cout<<"\t\t*************************************************"<<endl;
    cout<<"\t\t\tStructured Programming Assignment"<<endl;
    cout<<"\t\t*************************************************\n\n\n"<<endl;
    
    cout<<"\t\tStudent Name: Ashvind Anand MITTOO\n";
    cout<<"\t\tStudent ID: 101384\n";
    cout<<"\t\tCohort ID : BCNS/10B/FT"<<endl;
    cout<<"\t\tProgramme : BSc(Hons.) Computer Science with Network Security"<<endl;
    
    cout<<"\n\n\t\tQuestion 2\n"<<endl;
  
    system("PAUSE");
    system("CLS");
    
    //calling the functions to main
    user_choice();
    add_records();
    get_records();
}
//Function user_choice
int user_choice()
{
    char user;
    
    system("CLS");
    
    cout<<"Do you want to add/search/exit : ";
         cin>>user;
         if ((user=='A') || (user=='a'))
        {
            get_records();
            add_records();
        }
        else if ((user=='e') || (user=='E'))
        {
             exit(1);
         }
        else if ((user=='S') || (user=='s')) 
        {
             int search_records();
         }
         else
         {
             cout<<"Invalid input!\n";
             system("PAUSE");
             system("CLS");
             user_choice();
         }
}
//function to add at the end of list
int add_records()
{
    int stud_id;
    char name[100];
    float code;
    char user;
    int counter=0;
    head=NULL;
    
    //opening file datatable for writing
    ofstream  fin;
    fin.open("tabledata.txt",ios::app);
    
     while(1)
     {
         cout<<"Do you want to enter a Data [Y/N/E]: ";
         cin>>user;
         if ((user=='N') || (user=='n'))
        {
          //break out of the loop...
           break;
        }
        else if ((user=='E') || (user=='e'))
        {
             user_choice();
         }
        else if ((user=='Y') || (user=='y')) 
         {
    current=new node;
    
    cout<<"\n\tEnter ID: "; 
    cin>>stud_id;
    current->stud_id=stud_id;
    
    
    cout<<"\tName: "; 
    //pause for user to enter Name
     cin.ignore(1,'\n');
     cin.getline(name,100,'\n');
     
     //insert into linked list
     strcpy(current->name,name);
     
     cout<<"\tCode: ";
     cin>>code;
     current->code=code;
     
     //saving to file tabledata.txt
     fin<<"\n "<<stud_id<<" "<<name<<"\t"<<code;
  
     //incrementing linked list and linking nodes
     current->next=head;
     head=current;
       }
     
     else
         {
          cout<<"\nInvalid input. Only Y/N/E allowed.Re-enter your choice:\n";
         }
     }  
     fin.close();
     get_records();
  
}
//function to get records from tabledata.txt
int get_records()
{
int stud_id;//declaration
string name;//declaration
float code;//declaration
    ifstream fin;//open output file tabledata.txt for reading
    fin.open("tabledata.txt");
   //Printing Header for Table 
    cout<<"\nID\tName\t\tCode\n";
          cout<<"-------------------------------\n";
          
    if(!fin)
    {
       cout<<"Can't open tabledata.txt file";
       exit(1);        
       }
       
       else
       {
      while(!fin.eof())
        {
          fin>>stud_id>>name>>code;
          cout<<stud_id<<"\t"<<name<<"\t\t"<<code<<"\n\n";
          }
           
          /*while(head != NULL)
          {
            cout<<head->stud_id<<"\t"<<head->name<<"\t\t"<<head->code<<"\n\n";
            head=head->next;          
            }*/
            
        }
        
        fin.close();
}