Thread: Sorting a struct array(numerical+alphabetical)

(C programming)I have been trying for the past hours to sort a struct array with 10 elements. However I did not understand much at the sites where I looked for more information. Can anyone solve this, or at least give me a start.

Here is an example from the textfile im using:

82476,Watermelon Dorado Double India Pale Ale,31.90,355.00,Ale brittisk-amerikansk stil,Imperial/Dubbel IPA,Flaska,USA,Ballast Point Brewing,10.00

And here is my code:

Code:

void listanr(void)
    
    {


        char *oneline, *tok;
        char envara[512];
        char delim[] = ",";
        FILE *fp;
        int i;




        struct vara
        {
            int nummer;
            char namn[100];
            float pris;
            float volym;
            char typ[100];
            char stil[100];
            char forpackning[20];
            char land[20];
            char producent[50];
            float alkoholhalt;


        } items[100];




        if ((fp = fopen("varor.csv", "r")) == NULL)
        {
            fprintf(stderr, "Filen varor.csv gick inte att öppna\n");
            exit(-1);
        }


        for (i = 0; i < 100 && fgets(envara, 512, fp); i++)
        {
            envara[strlen(envara) - 1] = '\0';
            oneline = strdup(envara);


            tok = strtok(oneline, delim);
            items[i].nummer = atoi(tok);
            tok = strtok(NULL, delim);
            strncpy(items[i].namn, tok, (max(strlen(tok), sizeof(items[0].namn))));
            tok = strtok(NULL, delim);
            items[i].pris = atof(tok);
            tok = strtok(NULL, delim);
            items[i].volym = atof(tok);
            tok = strtok(NULL, delim);
            strncpy(items[i].typ, tok, strlen(tok));
            tok = strtok(NULL, delim);
            strncpy(items[i].stil, tok, strlen(tok));
            tok = strtok(NULL, delim);
            strncpy(items[i].forpackning, tok, strlen(tok));
            tok = strtok(NULL, delim);
            strncpy(items[i].land, tok, min(strlen(tok), sizeof(items->land)));
            tok = strtok(NULL, delim);
            strncpy(items[i].producent, tok, strlen(tok));
            tok = strtok(NULL, delim);
            items[i].alkoholhalt = atof(tok);


            printf("nummer: %d\n"
                "namn: %s\n"
                "pris: %f\n"
                "volym: %f\n"
                "typ: %s\n"
                "stil: %s\n"
                "forpackning: %s\n"
                "land: %s\n"
                "producent: %s\n"
                "alkoholhalt: %f\n\n",
                items[i].nummer,
                items[i].namn,
                items[i].pris,
                items[i].volym,
                items[i].typ,
                items[i].stil,
                items[i].forpackning,
                items[i].land,
                items[i].producent,
                items[i].alkoholhalt
);


      


            free(oneline);
        }


        fclose(fp);
    }