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copied!<pre><code>#include <stdio.h> #include <string.h> #include <stdlib.h> #include <time.h> //FUNCTION: Draw the Board char tochar(int i) { return i+'0'; } void marker( int x, int y, char board[][19] ); int check(int x, int y, char board[][19]) { if(x>1&&board[2*x+1][2*y+1]==board[2*x-1][2*y+1]) return 1; if(y>1&&board[2*x+1][2*y+1]==board[2*x+1][2*y-1]) return 1; return 0; } int drawBoard() { //Declare array size char board[19][19]; memset(board,32, sizeof(board)); //initialize variables int rows, columns, randomNumber, flag; //random number seed generator srand(time(NULL)); for ( rows = 0 ; rows < 9 ; rows++ ) { for ( columns = 0 ; columns < 9 ; columns++ ) { flag = 0; do { //generate random numbers from 2 - 8 randomNumber = rand() %7 + 2; board[2*rows+1][2*columns+1] = tochar(randomNumber); //Display the 'box' if rows and columns == 5 / i.e - board[5][5] if ( rows == 4 && columns == 4 ) { //Checks for 2 adjacent numbers if ( check(rows, columns, board)) { flag = 0; } else { flag = 1; marker( 2*rows+1, 2*columns+1, board ); //Print 'box' } } else { //Checks for 2 adjacent numbers. if ( check(rows, columns, board)) { flag = 0; } else //Prints the correct board { flag = 1; // printf( " %c ", board[2*rows+1][2*columns+1] ); } } } while ( flag == 0 ); //end outer do-while }//end inner for-loop printf("\n\n"); }//end outer for-loop for(rows=0;rows<19;rows++) { for(columns=0;columns<19;columns++) { printf("%c",board[rows][columns]); } printf("\n"); } }//end FUNCTION drawBoard //FUNCTION: Mark the surrounding of the number with "|" and "_" at board[5][5] void marker( int x, int y, char board[][19] ) { board[x][y-1] = '|'; board[x][y+1] = '|'; board[x-1][y] = '_'; board[x+1][y] = '_'; /* 192 191 217 218 */ } int main() { drawBoard(); } </code></pre>

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