drugi za jedan

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct racun {
    char broj_racuna[30];
    char prezime[30];
    char stanje[30];
};

int main()
{
    int i, j;
    struct racun racuni[5];
    struct racun temp;
    FILE *fp;

    fp = fopen("racun.txt", "r");

    for(i=0; i<5; i++) {
        fgets(&racuni[i].broj_racuna, 30, fp);
        fgets(&racuni[i].prezime, 30, fp);
        fgets(&racuni[i].stanje, 30, fp);
    }

    for (i=0; i<5; i++) {
        for (j=i+1; j<5; j++) {
            if (strcmp(racuni[i].prezime, racuni[j].prezime) > 0) {
                temp = racuni[i];
                racuni[i] = racuni[j];
                racuni[j] = temp;
            }
        }
    }

    for(i=0; i<5; i++) {
        puts(racuni[i].broj_racuna);
        puts(racuni[i].prezime);
        puts(racuni[i].stanje);
        printf("\n");
    }

    fclose(fp);

    return 0;
}