Computer Programming with Engineering Applications

CS 2073

Computer Programming with Engineering Applications

Assignment 2

1. (100 pts) Write a program that determines the roots of a quadratic equation. Given an

equation of the form

ax2 + bx + c = 0 (1)

The roots of the equation can be computed using the formula

x1,2 = −b∓

√ b2 − 4ac

2a (2)

Your program should read the coefficients from user and display one the following messages

depending on the value of roots.

• No real roots This means b2 − 4ac < 0

• Two equal roots This means b2 − 4ac = 0

• Two distinct roots This means b2 − 4ac > 0

Test your program for the following cases

(a) Equation is of the form ax^2+bx+c=0

Enter a, b, c:

1 2 1

Two equal roots

(b) Equation is of the form ax^2+bx+c=0

Enter a, b, c:

1 3 1

Two distinct roots

(c) Equation is of the form ax^2+bx+c=0

Enter a, b, c:

1 1 1

No real roots

Submit your program electronically using the blackboard system

The program you submit should be your own work. Cheating will be reported to office of academic

integrity. Both the copier and copiee will be held responsible.