What data structure should I use?

[caduardo21]

Class 1
Max
John
Jessy
Stephany


Class 2
Daniel
Katie
Tom


Class 3
Carlos
Jess
Aaron



I want to store this data in the computer memory but I don't know how to connect John with Class 1, Katie with Class 2, etc. How can I do this? Thanks.

[poverlord]

You can make a structure of a class, and make 3 instances of that structure.

struct class
{
     char *students[100]; 
     int seat;
     int class_num;
};

class *class1;
class1->students[1] = "God";

You should be able to figure the rest out.

[dwks]

char *students[100];
// ...
class *class1;
class1->students[1] = "God";

Maybe that last line was meant to be

strcpy(class1->students, "God");

[edit]
Oh, and by the way . . .

struct class {

class is an invalid name. It's a keyword.
[/edit]

[caduardo21]

The problem is that I don't know how many classes I'll have and how many students each class will have. It has to be something dinamic

[dwks]

You could use an array of classes.

[Salem]

> class is an invalid name. It's a keyword
Nope - it's a perfectly valid name in C

> The problem is that I don't know how many classes I'll have
So create a linked list of classes.

Personally, I'd also have a linked list of students in each class.

Do a search, there's plenty of prior discussion on linked lists.

[sand_man]

I would go something like this:

struct student{
  char *name;
  int seat;
  int class_num;  
};

struct class{
     struct student *students; 
};

This way your class can be as big or as small as you would like it to be.