What does a structure chart show compared with a flowchart?

Module hierarchy: which module calls which and what data passes

Which is true about sequence in the two charts?

Flowchart has strict top-to-bottom sequence; structure chart shows only call structure

Structure chart has strict sequence

How are decisions and data typically shown?

Flowchart: diamond, data not emphasised; structure chart: conditional call symbol, data and flags shown

Flowchart: data couples; structure chart: diamond

2072 Asoj · 4 marks

Flowchart vs structure chart

Short answer

A flowchart shows the detailed control flow (sequence and decision) of an algorithm, while a structure chart displays the hierarchical module organization with calls and data/control flags. Flowchart is for logic; structure chart for program architecture in structured design.

Compare Flowchart vs. Structure chart.

A flowchart shows the detailed sequence of steps and decisions (flow of control) of one algorithm or process. A structure chart shows the hierarchical organisation of the modules of a program, i.e. which module calls which and what data passes between them.

Point	Flowchart	Structure chart
Shows	Order of steps (control flow)	Module hierarchy (who calls whom)
Level	Detailed logic of one module	Overall architecture of the program
Symbols	Oval, rectangle, parallelogram (input/output), diamond, arrows	Rectangles (modules), arrows with data couples and control flags
Decisions	Shown with a diamond	Shown by the conditional call symbol (small diamond)
Data	Not emphasised	Data and control flags passed are shown
Sequence	Strict sequence of steps	No sequence, only call structure
Used in	Algorithm design, coding	Structured design (SSAD)

 Flowchart:         Structure chart:
 ( Start )               [ Main ]
     |                  /    |    \
  [ Read ]          [Read] [Calc] [Print]
     |
  < a>b ? > -- ...

Both belong to the structured (function-oriented) approach; OO design replaces them with sequence and class diagrams.

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