Example: Re-Writing the Quadratic Solver

This is a re-written version of the Quadratic Equation Solver seen earlier. It uses a MODULE:

• number and type of parameters in SUBROUTINE CALLs can be checked by compiler;
• easier to re-use code without error-generating edits.

• finds the roots of equations of the form ax^2 + bx + c = 0;
• the coefficients a, b and c are assumed to be real;
• solutions can be real or complex.

• Quadratic Using Modules