Error Handling in C (Files) -

i'm doing internal assessment computer science , i've come across brick wall. want search array code inputted user. i've implemented how search array string cant how prompt user reenter code if isnt within array. ideas? here progress how prompt user enter code stored within array? is,if incorrect code entered firs

for (j = 0; j < num_items; j++)       //loop num_items times           {                   //beginning of loop      if (strcmp (array[j].code1, codenew) == 0)       //if code found          {               //beginning of if statement          price[i] = item_qty[i] * array[j].price1;     //calculating ice f item          printf ("price : %d", price[i]);      //prints price          printf ("\nenter '%s' confirm: ", array[j].itemname1);     /confirming item          scanf ("%s", item_name[i]);   //reads item name array          while (strcmp (item_name1[i], array[j].itemname1) != 0)       /looping until both item names same          {           //begin while loop          printf ("incorrect input. enter '%s' ,try again!: ", array[j].itemname1); //prompt user try again          scanf ("%s", item_name[i]);       //reads item name array                                   }           //end while loop           total_price += price[i];      //calculation of total price                  //terminates loop          }               //end of if statement }                  //end of loop 

simply wrap of above code in while loop, after loop if isn't found read input again stdin