program of salesman's salary

Program 8) A computer manufacturing company has the following monthly compensation policy to their sales-persons:
    Minimum base salary                                   :   1500.00
    Bonus for every computer sold                      :     200.00
    Commission on the total monthly sales   :     2 per cent
Since the prices of computers are changing, the sales price of each computer is fixed at the beginning of every month. Make a  program to calculate a sales-person's gross salary. 

                                   PROGRAM

#define  BASE_SALAR               1500.00
#define  BONUS_RATE           200.00
#define  COMMISSION              0.02
main( )
 {
        int quantity ;
        float gross_salary, price ;
        float bonus, commission ;
        printf("Input number sold and price\n") ;
        scanf("%d %f, &quantity, &price) ;
        bonus                = BONUS_RATE * quantity ;
        commission      = COMMISSION * quantity * price ;
        gross_salary    = BASE_SALARY + bonus + commission ;
        printf("/n") ;
       printf("Bonus            = %6.2f\n" , bonus) ;
        printf("Commission  = %6.2f\n", commission) ;
        printf("Gross salary = %6.2f\n", gross_salary) ;
        getch( ) ;  
 }

Output:      Input number sold and price
                   5  20450.00
                Bonus                    = 1000.00
                Commission          = 2045.00
                Gross salary         =  4545.00

Given the base salary,bonus,and commission rate, the inputs necessary to calculate the gross salary are, the price of each computer and the number sold during the month.
 The gross salary is given by the equation
  Gross salary = base salary + (quantity * bonus rate)
                           + (quantity * price) * commission rate