big numbers

This is a discussion on big numbers within the C++ Programming forums, part of the General Programming Boards category; how do i display a floating point number without the decimals. I.E., how do i make this: //code: printf("%f", number); ...

  1. #1
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    big numbers

    how do i display a floating point number without the decimals.

    I.E., how do i make this:

    //code:
    printf("%f", number);

    //output:
    1.00000



    look like this:

    //code
    printf("%f", number);

    //output
    1
    I came up with a cool phrase to put down here, but i forgot it...

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    display it as a int not a float.
    "Christ died for our sins. Dare we make his martyrdom meaningless by not committing them?"

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    no no.... you dont understand...... maybe i should make it more clear:

    how do i turn this:

    //code
    printf("%f", number);
    //output
    99999999999999999999999999999.00000


    into this:

    //code
    printf("%f", number);
    //output
    99999999999999999999999999999
    I came up with a cool phrase to put down here, but i forgot it...

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    printf("/i",number) ;
    "Christ died for our sins. Dare we make his martyrdom meaningless by not committing them?"

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    doesnt even work at all....

    prints /i

    or if you meant \i, it gives an 'unknown escape sequance' error.
    I came up with a cool phrase to put down here, but i forgot it...

  6. #6
    Fingerstyle Guitarist taylorguitarman's Avatar
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    Code:
    float number = 1234.56;
    
    printf( "%f", (int)number );
    casting to int will truncate the fractional part.
    Last edited by taylorguitarman; 03-14-2002 at 09:32 PM.
    If a tree falls in the forest, and no one is around to see it, do the other trees make fun of it?

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    that doesnt work either.

    now it just prints the number as ' 0.00000 ' no matter what.
    I came up with a cool phrase to put down here, but i forgot it...

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    printf("%0.0f", f);

    ;-)
    kooma - t.h@iki.fi

  9. #9
    Fingerstyle Guitarist taylorguitarman's Avatar
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    Sorry, I meant this:

    printf( "%d", (int)number );
    If a tree falls in the forest, and no one is around to see it, do the other trees make fun of it?

  10. #10
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    Well, you could just use:

    printf("%.0f",f);

    The .0 means 0 digits printed after the decimal point. .1 would mean 1 digit etc.
    Allegro precompiled Installer for Dev-C++, MSVC, and Borland: http://galileo.spaceports.com/~springs/

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    ahh...


    beautiful!
    I came up with a cool phrase to put down here, but i forgot it...

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    my mistake

    I really should stop visiting this board once I can't remeber the last time I slept(I think it was last tuesday :-)).
    "Christ died for our sins. Dare we make his martyrdom meaningless by not committing them?"

  13. #13
    Kiss the monkey. CodeMonkey's Avatar
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    For God's sake:

    printf("%d",number);
    "If you tell the truth, you don't have to remember anything"
    -Mark Twain

  14. #14
    Confused Magos's Avatar
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    Totally useless question

    Why is it %d for integers, instead of %i or something?????

    PS: I'm ALWAYS fooled that % =96
    MagosX.com

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    Teach a man to fish and you feed him for a lifetime.

  15. #15
    Code Goddess Prelude's Avatar
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    >Why is it %d for integers, instead of %i or something?????
    Both are allowed, but there are differences in how they behave and should be used.

    For printf, %d and %i are both flags for signed decimal notation. For scanf, %d is a decimal integer pointer and %i is an integer pointer which may be of a base other than decimal.

    %i isn't used often because it's better to be explicit in how you are representing the base with %o, %x, and %d.

    Btw,
    Code:
    #include <stdio.h>
    
    int main ( void )
    {
      long double d = 12345678987634534.0;
      printf ( "%.0lf\n", d );
      return 0;
    }
    Fiddle with this a bit, you'll find that you can remove the decimal and anything that follows with a %.0 flag, and a long double will give you a precision up to 17 digits.

    >printf( "%d", (int)number );
    Have you tried this? It works okay as long as the number is small enough to fit in an integer, otherwise you get incorrect output.

    >printf("%d",number);
    No, and test something before you offer it as a solution.

    -Prelude
    Last edited by Prelude; 03-15-2002 at 03:46 PM.
    My best code is written with the delete key.

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