how to initialize a char matrix matrix with empty elements?

swedenguy · #1 22-Aug-2006, 03:40

hello guys!
i have a problem (don't know why) and need some help
I have a matrix se part of the code below

CPP / C++ / C 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]=' ';
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 ?

WaltP · #2 22-Aug-2006, 11:15

You specify your loop as:

CPP / C++ / C Code:

for (i = 0; i <= 9; i++)

(please use more whitespace to make your code readable as above)
During your last loop, what is the value of i? What does that do to your indecies?

CPP / C++ / C Code:

matrix[i/3][i%3] = '+';

What entry in matrix[?][?] are you accessing?

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how to initialize a char matrix matrix with empty elements?

Re: how to initialize a char matrix matrix with empty elements?