Can someone help me debug my code please? not sure where went wrong

•  * Return an array of arrays of size *returnSize.
* The sizes of the arrays are returned as *columnSizes array.
* Note: Both returned array and *columnSizes array must be malloced, assume caller calls free().
*/
int exist(int x, int y, int boardRowSize, int boardColSize){
if((x >= 0) && (x < boardRowSize) && (y >= 0) && (y < boardColSize)){
return 1;
}else{
return 0;
}
}

void reveal(char** board, int boardRowSize, int boardColSize, int x, int y){
if(exist(x, y, boardRowSize, boardColSize) == 1){
if(board[x][y] == 'E'){
int count = 0;
if(exist(x-1, y-1, boardRowSize, boardColSize) == 1 && board[x-1][y-1] == 'M') count++;
if(exist(x-1, y, boardRowSize, boardColSize) == 1 && board[x-1][y] == 'M') count++;
if(exist(x-1, y+1, boardRowSize, boardColSize) == 1 && board[x-1][y+1] == 'M') count++;
if(exist(x, y-1, boardRowSize, boardColSize) == 1 && board[x][y-1] == 'M') count++;
if(exist(x, y+1, boardRowSize, boardColSize) == 1 && board[x][y+1] == 'M') count++;
if(exist(x+1, y-1, boardRowSize, boardColSize) == 1 && board[x+1][y-1] == 'M') count++;
if(exist(x+1, y, boardRowSize, boardColSize) == 1 && board[x+1][y] == 'M') count++;
if(exist(x+1, y+1, boardRowSize, boardColSize) == 1 && board[x+1][y+1] == 'M') count++;
//printf("%d\n", count);
if(count > 0) board[x][y] = '0' + count;
else{
board[x][y] = 'B';
//printf("changed to B");
reveal(board, boardRowSize, boardColSize, x-1, y-1);
reveal(board, boardRowSize, boardColSize, x-1, y);
reveal(board, boardRowSize, boardColSize, x-1, y+1);
reveal(board, boardRowSize, boardColSize, x, y-1);
reveal(board, boardRowSize, boardColSize, x, y+1);
reveal(board, boardRowSize, boardColSize, x+1, y-1);
reveal(board, boardRowSize, boardColSize, x+1, y);
reveal(board, boardRowSize, boardColSize, x+1, y+1);
}
}
}
}
char** updateBoard(char** board, int boardRowSize, int boardColSize, int* click, int clickSize, int** columnSizes, int* returnSize) {
//printf("boardRowSize = %d, boardColSize = %d\n", boardRowSize, boardColSize);
//printf("%c", *board[0]);
*returnSize = boardRowSize;
*columnSizes = (int*)malloc(sizeof(int)*boardRowSize);
int i;
for(i = 0; i < boardRowSize; i++){
(*columnSizes)[i] = boardColSize;
//printf("columnSizes[%d] = %d\n", i, (*columnSizes)[i]);
}
//printf("columnsize %d", **columnSizes);

//printf("returnSize = %d", *returnSize);
if(exist(click[0], click[1], boardRowSize, boardColSize) == 0) return board;
if(board[click[0]][click[1]] == 'M') {
board[click[0]][click[1]] = 'X';
return board;
}
reveal(board, boardRowSize, boardColSize, click[0], click[1]);
//printf("board[0][2] = %c", board[0][2]);
return board;
}

• I think the C version has problem.
When we set value in columnSizes or malloc,it will raise Runtime Error.I don't know how to solve it.

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