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CSC 331 Exams 1 & 2 Combined correctly answered already passed
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CSC 331 Exams 1 & 2 Combined correctly answered already passed
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CSC 331 Exams 1 & 2 Combinedcorrectly answered already passed
The .class extension on a file means that the file - correct answer ✔✔is produced by the Java compiler
(javac).
Which of the following does not contain a syntax error?
a) System.out.println("Hello world!");
b) System.out.println("Helloworld!");
c) System.out.println(Hello world!);
d) System.out.println('Hello world!'): - correct answer ✔✔a) System.out.println("Hello world!");
All import declarations must be placed - correct answer ✔✔before the class declaration
A(n) ___ enables a program to read data from the user - correct answer ✔✔Scanner
What is the Scanner method for inputting an integer value? - correct answer ✔✔nextInt
What is the value of result after the following Java statements execute (assume all variables are of type
int)?
a = 4; b = 12; c = 37; d = 51;
result = d % a * c + a % b + a; - correct answer ✔✔119
What will be output after the following Java statements have been executed (assume all variables are of
type int)?
a = 4; b = 12; c = 37; d = 51;
if (a < b) {System.out.println("a < b");}
if (a > b) {System.out.println("a > b");}
, if (d <= c) {System.out.println("d <= c");}
if (c != d) {System.out.println("c != d");} - correct answer ✔✔a<b
c != d
What is output by the following Java code segment?
int temp = 180;
while (temp != 80)
{if (temp > 90) {
System.out.print("This porridge is too hot! ");
// cool down
temp = temp - (temp > 150 ? 100 : 20);
}else {
if (temp < 70) {
System.out.print("This porridge is too cold! ");
// warm up
temp = temp + (temp < 50 ? 30 : 20);}
}}
if (temp == 80) {System.out.println("This porridge is just right!");} - correct answer ✔✔This porridge is
too hot! This porridge is just right!
How many times is the body of the loop below executed?
int counter = 1;
while (counter > 20) {
loopcounter = counter - 1;
} - correct answer ✔✔0
The control variable of a counter-controlled loop should be declares as ___ to precent errors - correct
answer ✔✔int
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