Recently, a new model of next generation 5G smartphone has been designed by your team.
The software portion of the embedded system used to control this device is currently in development. One part of the coding involves solving a quadratic equation (for example: y=x³−4x+5 ).
Design an appropriate test hamess program in C programming language, to test the quadratic equation. The code fragment will be considered correct if it passes 2 test runs.