void PROMOTION_B()
{
 char c;
    printf("this pawn will be promoted please enter the piece 'q for queen ,k for knight,b for bishop,r for rook");
        scanf("%c",&c);
            switch (c){
                case 'q':board[x][y]=&queen_b;break;
                case 'k':board[x][y]=&knight_b;break;
                case 'r':board[x][y]=&rook_b;break;
                case 'b':board[x][y]=&bishop_b;break;
                default: printf("ERRROR ! Promotion is not valid try again.");PROMOTION_B();
            }
}

void PAWN_B(int i, int j,int x, int y){
if (board[x][y]==&rook_b || board[x][y]==&knight_b || board[x][y]==&bishop_b || board[x][y]==&king_b || board[x][y]==&queen_b || board[x][y]==&pawn_b){
        printf("ERRROR ! Move is not valid try again.");
        SCAN_B;
     }
else {
    if (x==i+1&&y==j&&(board[x][y]==&block_b || board[x][y]==&block_w )){
            if (i==7){
             PROMOTION_B();

            }else {
              board[x][y]=&pawn_b;
              BLACK_OR_WHITE(i,j);
              EB(i,j,W);
              printBoard();
      }
    }
    else if (((x==i+1&&y==j+1)||(x==i+1&&y==j-1))&&(board[x][y]==&rook_w || board[x][y]==&knight_w ||
          board[x][y]==&bishop_w || board[x][y]==&king_w || board[x][y]==&queen_w || board[x][y]==&pawn_w)){
              board[x][y]=&pawn_b;
              BLACK_OR_WHITE(i,j);
              EB(i,j,W);
              printBoard();
    }
    else if (x==i+2&&y==j&&i==1&&(board[x][y]==&block_b || board[x][y]==&block_w )&&(board[x-1][y]==&block_b || board[x-1][y]==&block_w )){
              board[x][y]=&pawn_b;
              BLACK_OR_WHITE(i,j);
              EB(i,j,W);
              printBoard();
    }

    else {
        printf("ERRROR ! Move is not valid try again.");
        SCAN_B();
    }
  }
}
void PROMOTION_W()
{
 char c;
    printf("this pawn will be promoted please enter the piece 'q for queen ,k for knight,b for bishop,r for rook");
        scanf("%c",&c);
            switch (c){
                case 'q':board[x][y]=&queen_w;break;
                case 'k':board[x][y]=&knight_w;break;
                case 'r':board[x][y]=&rook_w;break;
                case 'b':board[x][y]=&bishop_w;break;
                default: printf("ERRROR ! Promotion is not valid try again.");PROMOTION_W();
            }
}

void PAWN_W(int i, int j,int x, int y){
if (board[x][y]==&rook_w || board[x][y]==&knight_w || board[x][y]==&bishop_w || board[x][y]==&king_w || board[x][y]==&queen_w || board[x][y]==&pawn_w){
        printf("ERRROR ! Move is not valid try again.");
        SCAN_W();
     }
else {
    if (x==i-1&&y==j&&(board[x][y]==&block_b || board[x][y]==&block_w )){
            if (i==0){
             PROMOTION_W();

            }else {
              board[x][y]=&pawn_w;
              BLACK_OR_WHITE(i,j);
              EB(i,j,B);
              printBoard();
      }
    }
    else if (((x==i-1&&y==j+1)||(x==i-1&&y==j-1))&&(board[x][y]==&rook_b || board[x][y]==&knight_b ||
          board[x][y]==&bishop_b || board[x][y]==&king_b || board[x][y]==&queen_b || board[x][y]==&pawn_b)){
              board[x][y]=&pawn_w;
              BLACK_OR_WHITE(i,j);
              EB(i,j,B);
              printBoard();
    }
    else if (x==i-2&&y==j&&i==6&&(board[x][y]==&block_b || board[x][y]==&block_w )&&(board[x+1][y]==&block_b || board[x+1][y]==&block_w )){
              board[x][y]=&pawn_w;
              BLACK_OR_WHITE(i,j);
              EB(i,j,B);
              printBoard();
    }

    else {
        printf("ERRROR ! Move is not valid try again.");
        SCAN_W();
    }
  }
}