Re: [Dev-C++] float and double

[Robert D B. <lon...@ju...>]

wear_cost = ((km_travelled / 1000) - (((int)km_travelled % 1000) /  100)
* 200);
This needs to be cast as an int
Regards lonestar36

On Wed, 7 Mar 2001 01:13:31 +1100 "petermead" <pet...@im...>
writes:
> Robert I like it...
> 
> &
> 
> Q: Any ideas on why this modulus returns an error when compiled?
> 
> /* basic code I am learning for colledge.
> Hire cost is $0.30 per km and $200 per complete 1000km travelled */
> // To Calculate hire car cost.
> // By Peter Mead 06-03-2001.
> 
> #include <iostream.h>
> 
> void main()
> 
> {
> 
>      float ini_reading;
>      float fin_reading;
>      float km_travelled;
>      float trav_cost;
>      float wear_cost;
> 
>      // Title.
>      cout << "Calculate the hire car cost. \n\n";
> 
>      // Ask for initial odometer reading.
>      cout << "Please Enter the initial odometer reading :";
>      cin >> ini_reading;
> 
>      // Ask for finial reading.
>      cout << endl;
>      cout << "Please Enter the finial odometer reading :";
>      cin >> fin_reading;
> 
>      // Calculate costs.
>      km_travelled = (fin_reading - ini_reading);
>      trav_cost = (km_travelled * 0.3);
>      wear_cost = ((km_travelled / 1000) - ((km_travelled % 1000) / 
> 100) *
> 200);
> 
>      // Display total hire car cost.
>      cout << "The total hire car cost is $" << (wear_cost + 
> trav_cost);
>      cout << endl << endl;
> 
>      // Finish program.
>      cin.ignore(1);
>      cin.get();
> 
> 
> }
> 
> TIA...
> 
> ----==<(*)>==----
> Peter Mead :^)
> pet...@im...
> (GMT+10)_Victoria, Australia
> ~~~~~~~~~~~~~~~~~~~~~~
> ----- Original Message -----
> From: <Rob...@ao...>
> To: <dev...@li...>
> Sent: Wednesday, March 07, 2001 12:22 AM
> Subject: Re: [Dev-C++] float and double
> 
> 
> In a message dated 06/03/01 13:09:20 GMT Standard Time,
> pet...@im... writes:
> 
> << Any quick explanations on the difference between a float and a 
> double
> when
>  used as variables? >>
> 
> Take a look at float.h :-)
> 
> Or look below ;o)
> 
> <</*
>  * The characteristics of float.
>  */
> 
> /* The radix for floating point representation. */
> #define FLT_RADIX   2
> 
> /* Decimal digits of precision. */
> #define FLT_DIG     6
> 
> /* Smallest number such that 1+x != 1 */
> #define FLT_EPSILON 1.19209290e-07F
> 
> /* The number of base FLT_RADIX digits in the mantissa. */
> #define FLT_MANT_DIG    24
> 
> /* The maximum floating point number. */
> #define FLT_MAX     3.40282347e+38F
> 
> /* Maximum n such that FLT_RADIX^n - 1 is representable. */
> #define FLT_MAX_EXP 128
> 
> /* Maximum n such that 10^n is representable. */
> #define FLT_MAX_10_EXP  38
> 
> /* Minimum normalized floating-point number. */
> #define FLT_MIN     1.17549435e-38F
> 
> /* Minimum n such that FLT_RADIX^n is a normalized number. */
> #define FLT_MIN_EXP (-125)
> 
> /* Minimum n such that 10^n is a normalized number. */
> #define FLT_MIN_10_EXP  (-37)
> 
> 
> /*
>  * The characteristics of double.
>  */
> #define DBL_DIG     15
> #define DBL_EPSILON 1.1102230246251568e-16
> #define DBL_MANT_DIG    53
> #define DBL_MAX     1.7976931348623157e+308
> #define DBL_MAX_EXP 1024
> #define DBL_MAX_10_EXP  308
> #define DBL_MIN     2.2250738585072014e-308
> #define DBL_MIN_EXP (-1021)
> #define DBL_MIN_10_EXP  (-307)>>
> 
> XANDER: Who's a little fear demon? Come on, who's a little fear 
> demon?
> GILES: Don't taunt the fear demon.
> XANDER: Why? Can he hurt me?
> GILES: No, it's just tacky.
> ...
> GACHNAR: I am the Dark Lord! Fear me!
> WILLOW: He’s so cute!
> BtVS Season 4 - "Fear, Itself"
> 
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