Thread: Problems with Calculating

hi i am having a problem with my program. Its basically supposed to calculate this way:

Licence price (per 1 copy) Number of licences
$125____________________5 or less
$100____________________6-10
$75_____________________more than 10

Also posting ($25) and new service fee charge ($200). But i dont know what i did wrong in the code. It keeps printing out the same value for total.

Code:

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

int main(int argc, char *argv[])
{
  char choice;
  int Client_ID_number[5];
  char Client_Company_name[10];
  char Client_address[20];
  int Number_of_software_licences[3];
  char New_subscriber[1];
  char Postage_and_handling[1];
  char Support_service[1];
  int total;
 
 printf ("             ******************************************************                     ");
 printf ("    ******[CLIENT LIST PROGRAM by Abhyash Timsina]**********                    ");
 printf ("   **********************************************************                   ");
 printf ("\na. Add a New Client\n");
 printf ("b. Manage a Current Client\n");
 printf ("c. Exit Program\n\n");
 printf ("Enter your choice:- ");
 scanf ("%c", &choice);
 
  if ( choice == 'a' )
  {
       printf ("\nEnter Company Name: ");
       scanf ("%s", &Client_Company_name[10]);
       printf ("Enter Company Address: ");
       scanf ("%s", &Client_address[20]);
       printf ("Enter Number of Licences: ");
       scanf ("%s", &Number_of_software_licences[3]);
       if ( Number_of_software_licences[3] <= 5 )
          {
                total = 125 * Number_of_software_licences[3];
          }
       else if ( Number_of_software_licences[3] >= 6 || Number_of_software_licences[3] <= 10 )
          {
               total = 100 * Number_of_software_licences[3];
          }
       else if ( Number_of_software_licences[3] > 10 )
          {
               total = 75 * Number_of_software_licences[3];
          }
       printf ("Postage & Handling Fee? (y or n): ");
       scanf ("%s", &Postage_and_handling[1]);
       if ( Postage_and_handling[1] == 'y' )
          {
               total + 25;
          }
       else if ( Postage_and_handling[1] == 'n' )
          {
               total + 0;
          }
       printf ("Support Service? (y or n): ");
       scanf ("%s", &Support_service[1]);
       if ( Support_service[1] == 'y' )
          {
               total + 200;
          }
       else if ( Support_service[1] == 'n' )
          {
               total + 0;
          }
       printf ("The Client (%s) Total Bill is: %d\n\n", &Client_Company_name[10], &total);
       
  }
  else if ( choice == 'b' )
  {
       printf ("Test");
  }
  else if ( choice == 'c' )
  {
      return 0;
  } 

  system("PAUSE");	
  return 0;
}

What do you think this does?

Code:

scanf ("%s", &Client_Company_name[10]);

Hint: refer to your C book on the proper usage of scanf, and arrays, and the & operator.

Hint 2: scanf is not very good for reading free form strings. See How do I get a line from the user?

Hint 3: C arrays start at 0 (zero).

can you please give me the answer. it will be easier for me to understand..

... cant believe how rude people are

i just need to know whats wrong with the calculation