C Language - Read File to Save to Lists

Question

Imagine a school with several classrooms, and each room has several students

I’m having trouble reading file with the name of the room, number of places by rows (rows and columns) I have the following structure!

typedef struct
{
    char nome[50];
    int numero;
}Aluno;

typedef struct nodo{
    Aluno dados;
    struct nodo *anterior;
    struct nodo *seguinte;
}Nodo;

typedef struct{
    char sala[50];
    int linhas, colunas;
    Nodo inicio;
} Lista;

And the next to read from the file, but I know it’s wrong

int LerFicheiro(char *nf)
{
    FILE* w=fopen(nf, "r");
    Lista* li;

    int l,c;
    while (!feof(w))
    {
        fread(&li->nome, sizeof(Lista), 1, w);  // nome da sala
        fread(&li->linhas, sizeof(Lista), 1, w); //  nº linhas
        fread(&li->colunas, sizeof(Lista), 1, w);  // nº colunas

        for (l = 0; l <= li->linhas; l++)
        {
            for (c = 0; c < li->colunas; c++)
            {
                /*LER NOMES E NUMEROS*/


            }
        }
    }
    fclose(w);

}

This is the file to read! It has the name of the room, in the following row the number of places in line and in column!!! Next is the student’s number and the name of the respective student

Sala de Historia
8 5
1231 
Joao Afonso
563
Zé Alves
7634
Rita Pereira
948
Patricia Mendes
39
Rui Santos

Someone can make me or help me in this?

Thank you very much!!!!

Answer 1

fscanf(f, "%d", &Imag->NLINHAS);

Usually I use "fscanf" instead of "fread" to read the contents of the file.

    fscanf(f,"%s" ,&li->titulo);  // nome da imagem
    fscanf(f,"%d",&li->linhas); //  nº linhas
    fscanf(f,"%d",&li->colunas);  // nº colunas
    fscanf(f,"%d",&li->canais);  // nº canais

The structures you put up are relative to the room, but the code for reading the file is relative to an image, right?? Anyway, you still have to define in the structure List the title and the channels, and you want those variables in the read file.

typedef struct{
char sala[50];
char titulo[50];
int linhas, colunas,canais;
Nodo inicio;
} Lista;