BASIC - Programming Language 4+

Let's Code ‪!‬

俊 姜

Designed for iPad

    • USD 3.99

Screenshots

Description

BASIC: THE FEELING OF THE GOOD OLD TIMES !
10 INPUT A
20 B = SIN(A)
30 PRINT "ANSWER: ", B
40 END

BASIC USER'S GUIDE:

• PRINT

10 PRINT "HELLO WORLD !"
20 END


• INPUT

10 INPUT “A=”, A
20 PRINT A
30 END


• IF...THEN...

Number Comparison:

10 INPUT A
20 IF A>90 THEN B=“A”
30 PRINT B
40 END

Conditional Operators:
> greater than
< less than
>= greater than or equal to
=> equal to or greater than
<= less than or equal to
=< equal to or less than
= equal to
== equal to
<> not equal to
!= not equal to

THEN can be followed by GOTO, GOSUB, INPUT, PRINT.

String Comparison:

10 INPUT A
20 IF A=“TOM” THEN PRINT “BOY”
30 END

Conditional Operators:

= is
== is
<> is not
!= is not


• FOR...NEXT...

10 FOR I=1 TO 4 STEP 2
20 PRINT “HELLO”, I
30 NEXT I
40 END

STEP specifies the counter increment for each loop. If STEP doesn’t exit, the default increment is 1.

FOR...NEXT... loop can be nested.

10 FOR I=1 TO 5
20 FOR J=1 TO 4
30 PRINT I, J
40 NEXT J
50 NEXT I
60 END


• GOTO

10 ...
20 ...
30 ...
40 GOTO 10
50 ...


• GOSUB

10 PRINT “H”
20 GOSUB 100
30 PRINT “L”
40 END
100 PRINT “A”
110 RETURN


• SOUND

10 SOUND C, M, 0.5

The line 10 plays Middle C piano note for 0.5 seconds.

Note: C, C#, D, D#, E, F, F#, G, G#, A, A#, B
Pitch Range: L (low), M (middle), H (high)
Lasting Time: specifies how long a note lasts.

C, D, E, F, G, A, B can also be labeled as 1, 2, 3, 4, 5, 6, 7. (C# as 1#).


• TEXT

10 TEXT “HELLO”, x, y, size

(x,y): position of the string “HELLO”.


• CIRCLE

10 CIRCLE x, y, radius

(x,y): the center of the circle.


• RECTANGLE

10 RECT x, y, width, height

(x,y): top-left point of the rectangle.


• LINE

10 LINE x1, y1, x2, y2

(x1,y1): the starting point of the line.
(x2,y2): the ending point of the line.


• POINT

10 POINT x, y

(x,y): the position of the point.


• CLR: clear the edit window.
• CLS: clear the graph window.


• DELAY

10 DELAY 0.5

0.5:lasting time in seconds

This function is used to suspend execution of a program for a particular time.


• CURVE

10 CURVE x, y, radius, 0, PI

0: starting angle
PI: ending angle

The curve draws clockwise with center (x,y).


• Mathematical Functions:

SIN(X), COS(X), TAN(X), COT(X),
ASIN(X), ACOS(X), ATAN(X),
SINH(X), COSH(X), TANH(X),
ASINH(X), ACOSH(X), ATANH(X).

SQR(X): square root of x.
ABS(X): absolute value of x.
FCT(X): x factorial.
LOG(X): natural logarithm of x.
LOG10(X): base-10 logarithm of x.
LOG2(X) :base-2 logarithm of x.
EXP(X): base-e exponential of x.
ERF(X): the error function of x.
ERFC(X): the complementary error function of x.
ROUND(X) :integral nearest to x.
CEIL(X): the smallest integral that is not less than x.
FLOOR(X): the largest integral that is not greater than x.
TGAMMA(X): the gamma function of x.
LGAMMA(X): the natural logarithm of the absolute value of the gamma function of x.


• Reserved Variables:

INKEY : once a key is pressed, the value of INKEY changes.
RND : a random number.
PI : π


• Some Tips:

1. Undo & Redo typing on iPhone with a shake.
2. Copy an Emoji or some character from other places (like Notes), then paste them on the edit window.
3. Exponentiation is expressed as X^Y.

What’s New

Version 1.5

Compatible with more iOS devices.

App Privacy

The developer, 俊 姜, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

Supports

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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