Computer Problem Solving in EGR 1400, Engineering and Computer Science, 2023 — Exam 2 practice questions with complete solutions

EGR-1400-Exam-2-COMPLETE-SOLUTIONS
1. When-the-location-of-the-original-variable-is-passed-as-an-argument-from-the-
calling-method-to-the-called-method,-we-say-that-it-is...

a.-passed-by-reference
b.-copy-passed
c.-passed-by-value
d.-reference-passed
e.-none-of-the-above---CORRECT-ANSWER-a.-passed-by-reference

2. How-many-times-does-the-message-box-get-executed-in-a-loop-that-begins-
with-the-following-statement?

int-I;
for-(I-=-1;-I-<-4;-I++)
{
-MessageBox.Show(I);
}
a.-0-
b.-2
c.-3
d.-1
e.-none-of-the-above---CORRECT-ANSWER-c.-3

3. What-is-the-value-of-the-variable-I-after-the-loop-is-finished-executing?

int-I;
for-(I-=-1;-I-<-4;-I++)
{
-MessageBox.Show(I);
}

a.-1
b.-2
c.-3
d.-4
e.-none-of-the-above---CORRECT-ANSWER-d.-4

4. How-many-locations-will-there-be-for-an-array-declared-as:-string[-]-Names-=-
new-string[4];

a.-4
b.-3

, EGR-1400-Exam-2-COMPLETE-SOLUTIONS
c.-2
d.-1
e.-none-of-the-above---CORRECT-ANSWER-a.-4

5. After-the-code-is-finished-executing,-what-is-the-value-of-A[1]?

int[-]-A-=-new-int[5];
int[-]-B-=-new-int[3];
int-x;
for-(x-=-0;-x-<-5;-x++)
{
-A[x]-=-x-*-2-+-4;
}

a.-10
b.-8
c.-6
d.-0
e.-none-of-the-above---CORRECT-ANSWER-c.-6

6. What-is-the-maximum-index-of-the-array,-B?

int[-]-A-=-new-int[5];
int[-]-B-=-new-int[3];
int-x;
for-(x-=-0;-x-<-5;-x++)
{
-A[x]-=-x-*-2-+-4;
}

a.-0
b.-2
c.-3
d.-4
e.-none-of-the-above---CORRECT-ANSWER-b.-2

7. Which-of-the-following-statements-will-set-RandNum-to-a-value-between-1-
and-6-(including-1-and-6)?

a.-RandNum-=-myRand.Next(0,6);
b.-RandNum-=-myRand.Next(0,7);
c.-RandNum-=-myRand.Next(1,7);