VFP digital currency trading platform

1. Just like the literal meaning, when you dig the ground with a hoe in the mine, you will dig out the stairs in one of the positions and go down to the next floor

2. The first step is to learn to use the S / L method. What is the S / L method? It's save / load. There are two files in the diary that can be saved. It's more convenient to use instant archiving
first of all, when entering the mine cave, save it to file 2. Then hit the stone hoe, hoe to the stairs, write down the location. Read file 2, go directly to the place where you hoed the stairs just now, and see the stairs with a hoe. File to file 1 before you go downstairs
go down the stairs and save to file 2 immediately. Hit the stone and hoe the ground, hoe to the stairs, write down the position. Read file 2, go directly to the place where you hoed the stairs just now, and see the stairs with a hoe. File to file 1 before you go downstairs
go downstairs again, just like the above steps, and so on
there is a certain probability that there will be no stairs, which is very normal. If you encounter it, read file 1 and go down the stairs again. If you don't use s / L Dafa, hehe, when this happens, you can only cry without tears
Mining only takes hammers and hoes. When you go down to a certain level in the mine, you can determine whether there are stairs and where they are. The location of ore and black grass is also fixed, but the location of the secret treasure is random, not every time

when you dig the black grass, please remember the location. When you dig the stairs directly, you should also dig out the black grass to eat (each black grass + 5 physical strength, - 5 fatigue)
when you are not ready for cooking, go to the hospital to buy physical strength medicine and fatigue medicine. It is suggested that if you are deep seated, there are 5 strong strength medicine and 3 strong fatigue medicine

every next floor takes one minute, so don't go at night

black grass must be eaten.

3. In fact, monetary data is used as numerical data, so it is not necessary to define it. It is convenient to use it directly as numerical data.

4. Input mask:
can determine the format of field input
shield illegal input, rece artificial data input error
common input mask:
x-means any character can be input
9 -- indicates that you can enter numbers and positive and negative symbols
# - indicates that you can enter numbers, spaces and positive and negative symbols
$-- indicates that the current currency symbol is displayed at a fixed position
$$-- indicates to display the current currency symbol
* -- indicates that an asterisk is displayed on the left side of the value
. -- indicates the decimal point position of the value specified by the point separator
, - indicates to separate the integer part to the left of the decimal point with a comma, which is generally used to separate the thousandths.

5. VFP is the latest visual database management system platform launched by Microsoft company. It is a powerful 32-bit database management system

6. Yes, it can be seen from the news that Tianfu Tiancheng has reached a strategic alliance with VFP.

7.

VFP has the following three working modes:

I. menu operation mode

select the corresponding command from the menu according to the required operation (similar to word). Every time a menu command is executed, the command content corresponding to the menu will be displayed in the command window

2. Interactive mode

according to the various operations to be carried out, the man-machine dialogue mode is adopted to input the required commands one by one according to the format requirements in the command window, and after pressing enter, the machine will execute one by one

Third, program execution mode first complete the program in the program editing window, then select execute from the program menu, or input do command from the command window to let the machine execute

extended data:

1. Full name Visual FoxPro, is an application development software obtained by Microsoft company after several improvements of FOXBASE database software of Fox company and transplantation to windows, which is mainly used to develop data management and calculation software

VFP is the latest visual database management system platform launched by Microsoft, which is a powerful 32-bit database management system

it provides a fully functional tool, extremely friendly user interface, simple data access mode, unique cross platform technology, with good compatibility, real compileability and strong security. It is one of the fastest and most practical database management system software at present

Visual FoxPro 6.0 function:

1. Display: interface options, such as whether to display title bar, clock, command result or system information

2. Data: table options, string notes comparison settings. For example, whether to use index to enforce uniqueness, and whether to use Rushmore optimization

3. File location: change the default file storage location of the system

4. Project: Project Manager options, such as whether to use the wizard

Control: visual class library and ActiveX control options provided by the view class button in the form control toolbar

Region: the format of time, date, currency and number

Syntax coloring: determine the font and color used to distinguish program elements

8. Field image: determines which control to create when dragging a table or field to a form from data environment designer, database designer or project manager

reference source: Network VFP

reference source: Network Visual FoxPro software function

8. VFP has only five constant types:
1. Numerical constant: numerical constant can be integer or real number, for example, 56, 69.8 are numerical constant
2. Character type constant: a character type constant is a string of characters, spaces and numbers enclosed by a delimiter; The delimiters can be single quotes, double quotes, and square brackets. When one kind of delimiter itself is a part of character type constant, another kind of delimiter should be selected. For example: "ABCD", &; Professor[ Wang Ming] are character type constants written correctly
3. Logical constant: logical constant has only two values: "true" and "false". Use. T.. T.. Y.. Y., for true, and use. F.. F.. N.. N., for false. Note: the points on both sides can not be removed, but can be replaced by spaces
4. Date type constant: date type constant must be enclosed in curly brackets, for example: {^ 95.01.12}, {^ 01 / 12 / 95} are the correct way to write date type constant. The "^" keyboard character in braces is added to solve the "Millennium Bug" problem
5. Date time type constant: date time type constant must also be enclosed in curly brackets, for example: {^ 2005 / 12 / 06 11:12:32pm}, {2005.12.06 11:12:32pm}, {^ 2005-12-06 11:12:32pm} are the correct writing methods of date time type constant. Note: there must be spaces between date and time data.

9. There are seven common types
character type
C
numerical type (or integer, single precision floating-point number and double precision floating-point number)
n
currency type
y
date type
d
date time type
T
logical type
L
remark type
M

10. W, Blob Blob
C, char, character Character type
y, currency Currency type
D, date Date type
t, datetime Date time type
b, double Double precision fields
F, float Floating point fields
G, general General field type
I, int, integer Integer fields
L, logical Logical
m, memo Note type
N, num, numeric Numerical type
Q, varbinary Varbinary
V, varchar Varchar field