AP CSA Unit 1: Lesson 4 Questions
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10 Terms
1
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Assume the following has been typed in:
Scanner scan = new Scanner(System.in);
Which line of code declares a double y and sets it equal to input from the user?
Scanner scan = new Scanner(System.in);
Which line of code declares a double y and sets it equal to input from the user?
double y = scan.nextDouble();
2
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Which line of code declares a double variable z and sets it equal to 3.5?
double z = 3.5;
3
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Is an int smaller in memory than a double?
True
4
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What is printed by the following code?
int y = (13 - 7) / 4;
System.out.println(y);
int y = (13 - 7) / 4;
System.out.println(y);
1
5
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What is output when the following code is executed?
double num = 2.0 * (26.75 - 20);
System.out.println(num);
double num = 2.0 * (26.75 - 20);
System.out.println(num);
13.5
6
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What is output when the following code is executed?
double num = (0 - 3) * 5;
System.out.println(num);
double num = (0 - 3) * 5;
System.out.println(num);
-15.0
7
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What is output when the following code is executed?
int x = -7;
x++;
x++;
x--;
System.out.println(x);
int x = -7;
x++;
x++;
x--;
System.out.println(x);
-6
8
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What is output when the following code is executed?
int x = 13;
x++;
x++;
x -= 7;
x *= 3;
x--;
System.out.println(x);
int x = 13;
x++;
x++;
x -= 7;
x *= 3;
x--;
System.out.println(x);
23
9
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Which of the following is a primitive data type?
"hello"
5.6
a7878
"hello"
5.6
a7878
5.6
10
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What data type takes the least memory?
boolean