GW BASIC

2. ET-251
BY: ENGR. SALMAN HAMEED

3. Getting started with gw basic
 Start new version of BASIC just type “GW-BASIC’’
 This leads interpreter BASIC and You will see OK prompt
 Now type the following two lines
10 PRINT “Hello There’’
20 GOTO 10
 To test its output type RUN
 To save this program
SAVE “Hello’’

4. Getting started with gw basic
 Then leave the BASIC interpreter by typing system or alt+X
 To check your program or save program DIR h *.*
 To RUN the program type
BASIC A Hello
RUN “Hello’’

5. PRINT Statement
 Used to transmit or string output data on monitor’s screen
 Consist of a statement numbers, keyword PRINT and a list of output items
 The successive items must be separated by commas
Example:
100 PRINT X,Y,Z
110 PRINT “X= ‘’ X; “M=‘’ ; Y
120 PRINT “NAME’’ N$, “Address” A$
130 PRINT

6. RULES OF PRINT Statement
 Each PRINT Statement begins a new line of output
 Two or more lines generated by single INPUT Statement
 PRINT Statement without data items print a blank line.
 EXAMPLE:
10 LET X1=10
20 LET X2=20
30 LET X3=30
40 LET X4=40
50 LET X5=50
60 LET X6=100
70 PRINT X1, X2, X3, X4, X5, X6
OUTPUT:
10 20 30 40 50
100

7. RULES OF PRINT Statement
 EXAMPLE:
70 PRINT X1,X2,X3
80 PRINT X4, X5,X6
 OUTPUT:
10 20 30
40 50 100

8. RULES OF PRINT Statement
 EXAMPLE:
10 LET A=3
20 LET B=6
30 LET C=2
40 LET D=7
50 LET E=9
60 LET F=1
70 LET G=8
80 PRINT A,B,C,D,E
100 PRINT F,,,G
OUTPUT:
3 6 2 7 9
1 8

9. RULES OF PRINT Statement
 EXAMPLE:
10 LET A1=11
20 LET A2=12
30 LET A3=13
40 LET A4=14
50 LET A5=15
60 LET A6=16
70 LET A7=17
80 LET A8=18
90 PRINT A1; A2; A3; A4; A5; A6; A7; A8
 OUTPUT:
11 12 13 14 15 16 17 18