how to initialize a char matrix with empty elements?

This is a discussion on how to initialize a char matrix with empty elements? within the C Programming forums, part of the General Programming Boards category; hello guys! i have a problem (don't know why) and need some help I have a matrix se part of ...

  1. #1
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    how to initialize a char matrix with empty elements?

    hello guys!
    i have a problem (don't know why) and need some help
    I have a matrix se part of the code below
    Code:
    int i, j;
    	char matrix[3][3];
    	for(i=0;i<=9; i++) {
    		if(bo->square[i].piece_type==1) /*bo->square[i].piece_type return an integer */
    			  matrix[i/3][i%3]='+';
    		else if (bo->square[i].piece_type==2) /
    			matrix[i/3][i%3]='*';
    		else matrix[i/3][i%3]=' ';
    		}
    but i get a run time error when i have the last statement matrix[i/3][i%3]=' ';
    (Run-Time Check Failure #2 - Stack around the variable 'matrix' was corrupted.)
    If a remove this statement everything is correct but i get some strange (random character) at the empty matrix element when i print it on the screen
    Can somebody tell me how do i intialize an element of the matrix with an empty character ' ' without geting this error ?

  2. #2
    Devil's Advocate SlyMaelstrom's Avatar
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    Why the '/' on the end of your 'else if' line? Did you want a '\'? Even still you aren't really continuing the statement on the next line so you don't need it. Take that out and see if it works. That was the only problem I had.
    Last edited by SlyMaelstrom; 08-22-2006 at 05:17 AM.
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  3. #3
    and the hat of wrongness Salem's Avatar
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    > for(i=0;i<=9; i++)
    Also, it should be < 9

    On the last iteration, you access matrix[3][0]
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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  4. #4
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    Quote Originally Posted by Salem
    > for(i=0;i<=9; i++)
    Also, it should be < 9

    On the last iteration, you access matrix[3][0]
    thank you i found the error before i read your message
    but i want to thanks all of you for getting help when i need it

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