Top-down Design

It is a good idea to have an overall design for a program before you begin coding. Top-down design is analogous to an outline of a paper: it describes the function of the program in terms of subprograms. Each subprogram, in turn, is broken down into further subprograms until basic operations are reached.

Example: A payroll program might be designed as:

• Read in employee database.

• For each payroll record,
  • Compute gross pay.

  • Compute taxes and deductions.

  • Print paycheck.

  • Update payroll summary data.

• Print payroll summary.

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