Lab Task: MID TERM [20 Marks] | Assignment - June 2021

1. [5] Write a C program to solve the Drake equation N = R*fp*ne*fl*fi*fc*L. Where R, ne and L must be discrete value

Sample Input

    Enter R, F(p), n(e), f(l), f(i), f(c), L: 5 0.25 20 0.2 0.15 0.11 150

Sample Output

    The number of communicative civilizations within the Milky Way today: 12.375

2. [7] Write a C Code to calculate D = 𝒃^𝟐 − 𝟒𝐚𝐜 and show the result according to following conditions:

a. D>0 then Calculate X1, X2. Where 𝒙𝟏 = (−𝒃+√𝒃^𝟐−𝟒𝒂𝒄)/𝟐𝒂 and 𝒙𝟐 = (−𝒃−√𝒃^𝟐−𝟒𝒂𝒄)/𝟐𝒂

        b. D =0 then calculate X. Where 𝐱 = 𝒃^𝟐/𝟐𝒂

        c. D<0 then print “No Solution”.

Sample Input

        Enter a, b & c: 5 6 1

Sample Output

    X1: -0.2

    X2: -1

3. [8] Write a C Code to find total marks from given input: Attendance, Class test, Quiz test, Assignment, Midterm and Final Exam and find the grade using the following method:

1. If Total mark >=80 then A+
2. If Total mark >=70 then A
3. If Total mark >=60 then A
4. If Total mark >=50 then B
5. Else Grade = F

Sample Input

Enter Attendance, Class test, Quiz test, Assignment, Midterm and Final Exam: 2.5 7.5 3.5 7 21.5 33

Sample Output

Total Mark: 75 & Grade: A