Help me finding the errors PLEASE !!!

This is a discussion on Help me finding the errors PLEASE !!! within the C++ Programming forums, part of the General Programming Boards category; HELLOW EVERY BODY This is my program and I can't find the errors waiting for your coments Code: # include ...

  1. #1
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    Jan 2010
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    Post Help me finding the errors PLEASE !!!

    HELLOW EVERY BODY

    This is my program and I can't find the errors

    waiting for your coments




    Code:
    # include <iostream>
    # include <string>
    # include <fstream>
    # include <iomanip>
    
    using namespace std ;
    
    struct patient
    {
    string fname;
    int id;
    int age;
    };
    
    void Read (patient [],int&);
    void Find (patient [],int,int&);
    void Display (patient [],int&);
    
    int main()
    {
    patient info[20];
    int num(0),x(0);
     
    Read(info,x);
    Find(info,x,num);
    cout<<"Number of patints in twenties = "<< num;
    Display(info,x);
    return 0;
    }
    
    
    void Read (patient info[],int x)
    {
    ifstream din;
    din.open("data.dat");
    int c(0);
    
    while (din)
    {
    din>>info[c].fname>>info[c].id>>info[c].age;
    c++;
    }
    
    }
    
    
    void Find (patient info[],int x, int&num)
    {
    int c(0);
    
    while (c<20)
    {
    if (info[c].age>20 && info[c].age<29)
    num++;
    c++;
    }
    
    }
    
    void Display (patient info[],int x)
    {
    int c(0);
    cout <<" Patint name ID";
    
    while (c<20)
    {
    if (info[c].age>20 && info[c].age<29)
    cout<<setw(12)<<info[c].fname<<setw(12)<<info[c].id;
    c++;
    }
    
    }
    Last edited by Salmi; 01-10-2010 at 11:24 AM.

  2. #2
    Registered User
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    Error #1: indentation sucks

  3. #3
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    I forgot to say that I am using visual stude 2005 C++

  4. #4
    Registered User kryptkat's Avatar
    Join Date
    Dec 2002
    Posts
    638
    [Linker error] undefined reference to `Read(patient*, int&)'
    [Linker error] undefined reference to `Display(patient*, int&)'
    ld returned 1 exit status
    4 errors found.

  5. #5
    Registered User
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    Theres something wrong with your function declarations.

    I moved the main() to the end of the file and removed the

    Code:
    void Read (patient [],int&);
    void Find (patient [],int,int&);
    void Display (patient [],int&);
    and the code compiled ok.

    Edit: Just removing the "x" (which you aren't using anyway) from all arguments solves the problem.

    Edit again: Solved it. You forgot to put & at the appropriate places in your definitions. I.e:

    Code:
    void Read (patient info[],int& x)
    {
    and

    Code:
    void Display (patient info[],int& x)
    {
    int c(0);
    Last edited by Walle; 01-10-2010 at 12:41 PM.

  6. #6
    C++まいる!Cをこわせ! Elysia's Avatar
    Join Date
    Oct 2007
    Posts
    22,167
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.
    For information on how to enable C++11 on your compiler, look here.
    よく聞くがいい!私は天才だからね! ^_^

  7. #7
    Registered User
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    THANK YOU VERY MUCH

    I have found the errors

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