doubt

This is a discussion on doubt within the C++ Programming forums, part of the General Programming Boards category; i want a code such that i can be able to access each digit of a number. eg.. in a ...

  1. #1
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    doubt

    i want a code such that i can be able to access each digit of a number.
    eg..
    in a for loop in 1 iteration,i want to access digits of 11^2ie 121 and in next iteration digits of 11^3 ie 1331 and in next 11^4 etc
    i want to access 1,2 and 1 separately in 121.....

    if we have 121 stored in an int variable,how can we transfer its value to an array?

    i mean..

    int k;
    int a[10];
    now i want vlue of k(121) to go into a such that a[0]=1,a[1]=2 and a[2]=1....and the value of k keeps changing in d loop,so i want corresponding change in a[]....

    hope u get my point
    thnx in advance...

  2. #2
    and the hat of wrongness Salem's Avatar
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    Consider this

    123 / 10 = 12
    123 % 10 = 3
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

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    Quote Originally Posted by Salem View Post
    Consider this

    123 / 10 = 12
    123 % 10 = 3
    but the program is not limited to a 3 digit number.
    actually, i want to write a code for output:

    ....1
    ...1 1
    ..1 2 1
    .1 3 3 1
    1 4 6 4 1

    the dots represent spaces(spaces were not coming,it was becoming left indented so i put dots)
    these r powers of 11,with alternate space & digits
    Last edited by archit1993; 12-26-2011 at 04:39 AM.

  4. #4
    and the hat of wrongness Salem's Avatar
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    Is it really powers of 11, or Pascal's Triangle?
    Pascal's triangle - Wikipedia, the free encyclopedia

    Because strictly powers of 11 breaks down after a few rows.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  5. #5
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    yeah it was pascals triangle till 14641 line.....how will we do it?

  6. #6
    and the hat of wrongness Salem's Avatar
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    Well "we" could try reading the algorithm description on wikipedia, then attempt some code to calculate the current row based on the previous row.

    Eg.
    Code:
    int oldRow[10] = { 1 };
    int newRow[10] = { 0 };  // make this contain { 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }
    Then with some more iterations of the code.
    Code:
    int oldRow[10] = { 1, 3, 3, 1 };
    int newRow[10] = { 0 };  // make this contain { 1, 4, 6, 4, 1, 0, 0, 0, 0, 0 }
    I mean, once you have the algorithm in place, and an initialised row to work from, the rest is pretty easy.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

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