Files problem

[Unregistered]

I use Turbo c++ 3.0

Recently I made a structure and wrote it to the file and when I tried to read from it I get errors.

For eg : - I get this

Name : Ron%$##$$
Age : #3
Email : moderato#@hotmail.com

Instead of :
Name : Ronaldson
Age : 13
Email : [email protected]

[Akilla]

Here's how I wrote a similar program

// learning structures//

#include <stdio.h>
#include <conio.h>

typedef char def_name[15];

struct tag_name
{
    def_name firstname;
    def_name lastname;
};

struct tag_age
{
    int years;
};

struct tag_number
{
    int number;
};

struct tag_record
{
    tag_name name;
    tag_age age;
    tag_number phonenumber;
} record[2];

void getdata (void)
{
    int i;
    
    for (i=0; i<=1; i++)
    {
        printf("Enter Name: ");
        scanf("%s %s", record[i].name.firstname, record[i].name.lastname);
        printf("Enter Age: ");
        scanf("%d", &record[i].age.years);
        printf("Enter Phone Number: ");
        scanf("%d", &record[i].phonenumber.number);
    }

}

void showdata (void)
{
    int i;
    for (i=0; i<=1; i++)
    {
        printf("Record: %d\n", i);
        printf("Name  : \t%s %s\n", record[i].name.firstname, record[i].name.lastname);
        printf("Age   : \t%d\n", record[i].age.years);
        printf("Phone : \t%d\n\n", record[i].phonenumber.number);
    }
}
    
main()
{
    int i;

    getdata();
    printf("\n");
    showdata();
    

    getchar();
    getchar();
} 

I unnecessarily put some typedefs ('cause i was learning those
things a few days ago). ..
you can simply declare directly if you want if you don't like typedefs..

hope this'll be useful.

COOL PROGRAMS @ www.akilla.tk

[Akilla]

By the way.... the problem you're getting is maybe due
to improper use of variables... (like mixing up of char
with string, etc)

See my code and see how I used the variable types..

**If you're confident you won't get confused**, see my
C++ code below ....

//program to learn classes

#include <iostream.h>
#include <stdio.h>

class person
{
    char name[30];
    public:
    void getdata();
    void showdata();
    int age;
};

void person :: getdata()
{
    cout << "Enter name : ";
    cin >> name;
    cout << "Enter age : ";
    cin >> age;
}

void person :: showdata()
{
    cout << "Name: "<< name << endl;
    cout << "Age: " << age << endl;
}

main()
{
    int i;

    person someone[2];

    for(i=0; i<=1; i++)
    {
        someone[i].getdata();
    }

    for(i=0; i<=1; i++)
    {
        someone[i].showdata();
    }
    getchar();
} 

That's C++ syntax.

COOL PROGRAMS @ www.akilla.tk

[Akilla]

ah.. looks like I'm talking too much.. :-)

anyway, if you want to write it to a file..

use
FILE *fp

fp = fopen("FILENAME.TXT", "w");

and whenever you're writing to the file, use

fprintf(fp, variablenamehere);

variablename will be
any variable from your struct (like the name, email address, etc)

hope this helps..

COOL PROGRAMS @ www.akilla.tk