display records held in a struct

Hi Guys,


Im trying to write a small function that when called will print out any records currently held in the struct.

If there are no records being held then a message will say no records.

If there are records then they will be displayed.

The code I have attempted runs but loops through all the code and displays the Max records all blank.........

I wondered if anyone could guide me a little.

Im using Borland 4.5 On WinXP

Regards as ever
C

Code:

void display_all(void)
{
 int key;
 int loop=0;

    while(loop < MAX)
  {

     if(my_database[loop].reg_no !="\0")
    {
    printf("\nReg ID        : %s\n",my_database[loop].reg_no);
    printf("\nFirst Name    : %s\n",my_database[loop].fname);
    printf("\nSurname       : %s\n",my_database[loop].sname);
    printf("\nCredits       : %d\n",my_database[loop].credit);
    printf("--------------------------------------------- ");
    printf("\n");
    }
loop++;
}

key=getchar();
}

Code:

if(my_database[loop].reg_no !="\0")

Isn't that suppose to be

Code:

if(my_database[loop].reg_no[0] !='\0')

You should get an error with the first one

Code:

void display_all(int n)
{
  int key;

  if (n == 0)
    printf("No records\n");
  else {
    int loop;

    for(loop = 0; loop < n; loop++)
    {
      if(my_database[loop].reg_no !="\0")
      {
        printf("\nReg ID        : %s\n",my_database[loop].reg_no);
        printf("\nFirst Name    : %s\n",my_database[loop].fname);
        printf("\nSurname       : %s\n",my_database[loop].sname);
        printf("\nCredits       : %d\n",my_database[loop].credit);
        printf("--------------------------------------------- ");
        printf("\n");
      }
    }
  }

  key=getchar();
}

In the code that calls this function, you would keep a count of how many records there are. Just pass that to display_all and the correct number of records will be printed (or an appropriate message will be displayed if there are none).

Thanks Prelude

That seems to have worked a treat.

Many thanks

C