Download Test 3 Preparation

CSCI 151 Fall 2013 TEST 3 PREP
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Date: November 8, 2013
Open book, open notes, NO CELLPHONES. YOU ARE NOT ALLOWED TO USE PUTTY FOR
PART I
TEST 1 consists of Two Parts
o Part I - 60 points – 2 short questions
o Part II - 40 points - 1 program writing question
SAMPLE PART I Question 1
Trace the following program and write the program output
i=0
while (i<=10):
print(“HELLO”)
i = i +4
print(“DONE”)
SAMPLE PART I Question 2
Trace the following program and write the program output
sum = 0
i=2
while (i<=10):
sum = sum + i
i=i+3
print(sum)
SAMPLE PART I Question 3
a. Trace the following program and write the program output
b. Explain, what this program is calculating
num = 356793
sum = 0
i=1
while (i<=6):
k = num % 10
sum = sum + k
num = num / 10
i=i+1
print(sum/6)
SAMPLE PART I Question 4
a. Trace your program and write an output for the following input sequence:
12 345 6189 27 0
b. Explain what this program is calculating.
num = int(input(“enter number “))
a= 0
b= 0
while(num!=0):
k=num%10
a=a+k
b=b+1
num = int(input(“enter number “))
if(b>0):
c= a /b
print(a,b,c)
else:
print(“try again”)
SAMLE Part II
Q1. Student takes certain amount of courses during the academic year. Write a program that reads
number of courses and final grade for each course, and finds the average final grade for the
academic year. Use TOP-DOWN design.
Q2. Write a function that accepts one parameter, which is 10-digit integer, and finds and prints
the average of its EVEN digits. If there are no even digits in the parameter, the function prints an
appropriate message. Write a main function to test your function
Q3. Write a program that reads a sequence of non-zero integers. First zero value will terminate
the input. The program finds amount, sum, and average of the negative numbers.
Example: Input: 2 -5 6 7 -8 -9 0
Output: there are 3 negative numbers, their sum is -22 and their average is -7.333333