Finding Discounted Amount

              main()  
              {  
                  float b, d, a, c;  
                  clrscr();  
                  
                  printf("\n Enter Amount");  
                  scanf("%f", &b);  
              
                  if (b >= 300 && b <= 1000)  
                  {  
                      d = 20;  
                  }  
                  else if (b >= 1001 && b <= 1500)  
                  {  
                      d = 30;  
                  }  
                  else if (b >= 1501 && b < 2000)  
                  {  
                      d = 40;  
                  }  
                  else  
                  {  
                      d = 0;  
                  }  
              
                  printf("\n Discount Percentage: %f", d);  
                  c = b * d / 100;  
                  a = b - c;  
              
                  printf("\n Discount Amount: %f", c);  
                  printf("\n Amount After Discount: %f", a);  
              
                  getch();  
              }  
              

Output: