hollow rectangle

This is a discussion on hollow rectangle within the C Programming forums, part of the General Programming Boards category; I need a simple algorithm with nothing complicated, no pointers, arrays ect. I need to draw a HOLLOW rectangle of ...

  1. #1
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    hollow rectangle

    I need a simple algorithm with nothing complicated, no pointers, arrays ect.

    I need to draw a HOLLOW rectangle of any given dimensions..

    NOT

    ****
    ****
    ****

    No "*" inside, only the borders.

    Please somebody tell me the right way to do it.

  2. #2
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    Guest
    how about this?
    printf(***);
    printf(* *);
    printf(***);

  3. #3
    Registered User Commander's Avatar
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    Sep 2001
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    804
    Try with loops...............I'd recomend for
    oh i'm sorry! i didn;t realize my fist was rushing to meet ur face!

    MSN :: commander_android@hotmail.com []*[]

  4. #4
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    I need an algorithm

    The users enters the dimesnion, say:

    height = 3
    width = 4

    output:

    ****
    *``*
    ****

    but ofcourse the ` arent there. only put it in so that the output would look right.

    Does anbody know an algorithm for a hollow rectangle

    thanks

  5. #5
    I'm Back
    Join Date
    Dec 2001
    Posts
    556
    are you the same person who asked this in the game board..

    Code:
     
    do
    {
     cin>>ans;
     ans=toupper(ans);
    }
    while(ans!='Y' && ans!='N');
    
    if(ans=='Y')
    {
     dont_cross_post();
     gameprog_board();
    }
    else
     gameprog_board();

  6. #6
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    Guest
    The horizontal will be your inner loop and the vertical will be your outer loop. The number of blanks will be two less than each dimension. Play with it a bit. We don't want to do all of your homework.

  7. #7
    Registered User That1Guy's Avatar
    Join Date
    Feb 2002
    Posts
    5

    hollow rectangle - my solution

    OK, I'll bite this once but I'm a total noob myself and can't testify to the quality of my solution. It works, but it's not pretty.

    -That1Guy

    Code:
    #include <stdio.h>
    
    int main(void)
    {
            int i;  
            int j;  
    
            int numRows = 15;
            int numCols = 15;
    
            int rowCount = 0;
            int colCount = 0;
    
            for(i = 0; i < numRows; i++)
            {       
                    if(rowCount == 0 || rowCount == (numRows - 1))
                    {       
                            rowCount++;
    
                            for(j = 0; j < numCols; j++)
                                    printf("*");
                            printf("\n");
                    }       
                    else    
                    {       
                            rowCount++;
    
                            for(j = 0; j < numCols; j++)
                            {       
                                    if(colCount == 0 || colCount == (numCols - 1))
                                    {       
                                            colCount++;
                                            printf("*");
                                    }       
                                    else    
                                    {       
                                            colCount++;
                                            printf(" ");
                                    }       
                            }       
    
                            printf("\n");
                            colCount = 0;
                    }       
            }       
            
            return(0);
    }

  8. #8
    Code Goddess Prelude's Avatar
    Join Date
    Sep 2001
    Posts
    9,796
    This question is asked often enough that a board search will work wonders. I know that quzah and I gave solutions to this problem not a week ago.

    -Prelude
    My best code is written with the delete key.

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