Thread: Hot to bubble sort records from dat file

Hello everyone! I'm trying to solve this particular problem that has been buggin me for a while, because I can't seem to find what i need anywhere on the net. I need to sort some records (6 or 7) read from a dat file using the bubble sort algorithm. I have written some record on file in "w" mode. Now, provided that the following is the code for normally reading my records:

Code:

	
Code:
	
FILE * lettura;


struct struttura{
    char nome[20];
    int anni;
    int punti;
    int numero;
};


struct struttura stru;


int main()
{
     lettura = fopen ("dati.dat", "r");
        if (lettura == NULL){


            fprintf(stderr, "\nError opening file\n");
            exit (1);
        }else{
            while(fread(&stru, sizeof(struct struttura), 1, lettura)){
                printf("dati %s, %d, %d, %d\n", stru.nome, stru.anni, stru.punti, stru.numero);
            }
        }


    fclose(lettura);
}

How can i apply the sorting algorithm here? Can anyone show me the code?

I know BS is not very efficient but i need for very few records, so i guess it is acceptable. Any solution would work actually, as long as i make it work and understand how, so that i can apply it to other exercises.