#include<stdio.h>
#include<conio.h>

main()
{
      int qty, dis=0;
      float rate, exp;
      printf("Enter quantity and rate \t");
      scanf("%d %f", &qty, &rate);
      if (qty > 1000)
         dis = 10;
      exp = (qty * rate) - (qty * rate * dis / 100);     
      printf("\n total expense is Rs. %f \n", exp);
      system("pause");      
}