BASIC basic tutorial - Printable Version

BASIC basic tutorial - Printable Version

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BASIC basic tutorial - HeR97 - 02-11-2012

BASIC is a family of general-purpose, high-level programming languages whose design philosophy emphasizes ease of use - the name is an acronym from Beginner's All-purpose Symbolic Instruction Code.
To program with BASIC you'll need to download QBasic

Basic elements of BASIC
BASIC "is made" from following elements

1.
Big letters of English alphabet: A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z
2.
"Decimal digits"
0,1,2,3,4,5,6,7,8,9
3.
Special symbols
. , ; # $ % & "
4.Symbols of arithmetic operations
+ - * / ^
5.Relation symbols
< > <= >= <> >< =
6.Symbols that make up the word in English
INPUT LET END FOR NEXT PRINT etc

Lets make a simple calculator
Begin with CLS (clear screen)

Code:
CLS
INPUT "Input numbers";A,B
C = A * B
D = A - B
E = A / B
F = A + B
PRINT "Results are";C,D,E,F
END

As you can see our code calculates the variables
With PRINT command we printed the results

Now we'll make program with condition

Code:
CLS
INPUT "Input numbers"A,B
IF A = 0 THEN
PRINT "Impossible to divide with zero"
ELSE PRINT "Result is";A/B
END IF
END

You can see that if a = 0 then our program will print Impossible to divide with zero
And if it isn't it will print the result

Lets list numbers from 1 to N (number we choose)

Code:
CLS
INPUT "Input ending number";N
FOR I = 1 TO N
PRINT I
NEXT I
END

Lets make a program for squaring

Code:
CLS
INPUT "Input number";X
A = X ^ 2
PRINT "Result is";A
END

A = X ^ 2 is squaring the number
I think these are basics
Can help to someone who wants to learn and for someone who is doing maths homework

RE: BASIC basic tutorial - 4don4i - 02-16-2012

good tut.....thanks for the share.