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.");
     }
else {
    if (x==i+1&&y==j&&(board[x][y]==&block_b || board[x][y]==&block_w )){
        board[x][y]=&pawn_b;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_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;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_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;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_w;
            }
        printBoard();
    }

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

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.");
     }
else {
    if (x==i-1&&y==j&&(board[x][y]==&block_b || board[x][y]==&block_w )){
        board[x][y]=&pawn_w;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_w;
            }
        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;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_w;
            }
        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_b;
            if ((i%2==0&&j%2==0)||(i%2==1&&j%2==1)){
                board[i][j]=&block_b;
            }else{
                board[i][j]=&block_w;
            }
        printBoard();
    }

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