WAP to Calculation of gross salary

/*WAP to Calculation of gross salary */

#include<stdio.h>
#include<conio.h>
main( )
{
 float   bs, gs, da, hra ;

 printf ( "Enter basic salary " ) ;
 scanf ( "%f", &bs ) ;

 if ( bs < 1500 )
 {
  hra = bs * 10 / 100 ;
  da = bs * 90 / 100 ;
 }
 else
 {
  hra = 500 ;
  da = bs * 98 / 100 ;
 }

 gs = bs + hra + da ;
 printf ( "gross salary = Rs. %f", gs ) ;
 getch();
}