Problem with swapping structures inside file

Hi,i tried normal swapping method like this (counter is number of structures written in file) :

Code:

---

fopen("books.txt","r+");
system ("cls");                 
for(i=1;i<counter-1;i++){
for(j=1+1;j<counter;j++){                         
fscanf(f," %[^,], %[^,], %[^,], %[^,],%d",k[i].name,k[i].author,k[i].publisher,k[i].ISBN,&k[i].year);                                                                     
  if(strcmp(k[i].name,k[j].name)>0)
  {
                                                                                 
t=k[i];
k[i]=k[j];
k[j]=t;
fprintf(f,"%s,%s,%s,%s,%d\n",k[i].name,k[i].author,k[i].publisher,k[i].ISBN,k[i].year);}}
}}}

---

But it doesn't do anything. Help me pls

Perhaps you should read the whole file first, before trying to compare with struct elements which don't exist yet.

The inner loop should go j = 0 to i-1.
But as a general approach, you need to put in diagnostic printfs to see what the program is doing.