Division in VC++

Reason is, 'long' will omit/drop the decimal part before it returns.
say operation  (a / b), both a & b are long then it will return only the values other than the decimal part.

also for example:

long a = 380835764.5555; //a will be 380835764
long b = 458083024.6666; //b will be 458083024
double c = (a / b) ; //c will be 0 and omit the decimal part

you could either make both the 'long' variable to 'double' or you can do what Infinity suggested.

Best regards,
DeepuAbrahamK

Still it Shows the same error...

I am working on VC++ .Net in Visual Studio 2005.

Its very urgent.....I will increase the points...

>> Still it Shows the same error...

What error ? You didn't mention an error ...

Did you try this :

    long a = 380835764;
    long b = 458083024;

    double c = ((double) a) / b;

    cout << c << endl;

double c = ((double) a) / b; should have worked,
How are you printing the zero value?

I will paste the code....

long NewValue2 , Total ;
double percent;

fprintf(fd,"\n The values at iteration  NewValue2=%ld Total=%ld\n",NewValue2,Total);
o/p for above line....NewValue2 = 380835764 ,Total = 458083024 ;

percent = ((double)NewValue2)/((Total)) ;

fprintf(fd,"\n The value of percent is %lf \n",percent);// Gives output as 0.00000.

Are you sure ?

Is there any other code you didn't show ?

Did you recompile the code after making the changes ?

It should show 0.117647

Oh, and I see you're using a file for output. Try erasing the file before running the program ...

... and if that still does not work, try

percent = ((double)NewValue2)/((double)(Total)) ;

i already tried the above one.......

>> i already tried the above one.......

How about my questions ?

Are you sure ? Yes

Is there any other code you didn't show ? There is nothing that I can Show..I crated an empty project
and Just experimenting before I implent it in my project..

Did you recompile the code after making the changes ? Yes , I rebuilded ( Ctrl + Alt +F7)

It should show 0.117647 // No its not Showing...

Create an empty project, and put this code in it :

#include <stdio.h>

int main(void) {
  long NewValue2 , Total ;
  double percent;

  FILE *fd = fopen("out.txt", "w");

  fprintf(fd,"\n The values at iteration  NewValue2=%ld Total=%ld\n",NewValue2,Total);

  percent = ((double)NewValue2)/((Total)) ;

  fprintf(fd,"\n The value of percent is %lf \n",percent);

  fclose(fd);
  return 0;
}

You'll see that it DOES work, unless you have a compiler that doesn't follow the standard.

I got it working, I dont know the mistake that I made earlier but it really didn;t work at that time......I am really a fool......

Thanks for your time...........

I will close the thread.......