• A program is a set of step-by-step instructions.

• It directs the computer to do the tasks you want it to do and produce the results you want.

• In computer programming, the term problem is task to be performed.

• The problem has to be defined precisely.

Example:

So the given problem definition “Find the roots of quadratic equation” is incomplete.

Complete Problem Definition:

• The statement should be “Write a program to find the roots of a quadratic equation, accepting the coefficients from user”.

• It may also be specified to consider or to ignore the imaginary roots.