Thread: 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.

how about this?
printf(***);
printf(* *);
printf(***);

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

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.

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);
}