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Visual Basic: Detailed Content

Main Aspect
F/G/C
G/C
C
Representation
Of Solution to
Problem
labelled diagram of HCI
specifying objects
identification of variables
and their types

pseudocode for subprograms

Software
Development
Process

 

    analysis, design,
implementation, testing,
documentation, evaluation,
maintenance

Program Entry

enter;
edit;
list/print out current
version

   

 

 
Modularity subprograms linked to
command events
    common pre-defined
functions
Data Types integer;
single, string
    one dimensional arrays
Data Input and
Output
command button;
text box;
label
input box;
option button;
message box
list box;
combo box:
check box
Statements assignment of constants
(eg boxes := 6);
assignment of expressions
(eg total := price + vat)
assignment of increments
(eg counter := counter + 1)
   
Expressions simple, common keywords
and arithmetic operators
comparison operators logical operators (AND, OR,
NOT)
Repetition fixed loop (For … Next) control variable used in loop nested loops;
conditional loop (Do …
Loop While …, Do … Loop
Until …)
Selection     simple selection (If … Then
… End If)
two-way selection (If …
Then … Else … End If)
Identify and
Rectify Errors
syntax, execution and logic
errors
       
Testing use supplied test data use own test data supply full set of test data
(normal, extreme,
exceptional)
Readability use standard notation for
objects (eg txtName);
use meaningful object
variable names;
include comments
       
User
Interface
design HCI;
create/edit/position objects;
set initial object properties
prompts to user input validation
Documentation User documentation     Technical documentation