Chapter 5 Loops 1. How many times will the following code print "Welcome to Java"? int count = 0; while (count >= 0) { System.out.println("Welcome to Java"); } a. b. C. d. e. 2. What is the output of the following code? } int x = 0; while (x < 4) { x=x+1; a. b. 8 9 System.out.println("x is "+--x); C. d. e. 10 11 infinity } a. b. C. d. e. x is 0 x is 1 3. What will be displayed when the following code is executed? int number = 6; while (number > 0) { number -= 3; System.out.print(number + " "); x is 2 x is 3 x is 4 630 63 30 30-3 MO 0-3

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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In Java

Chapter 5 Loops
1. How many times will the following code print "Welcome to Java"?
int count = 0;
while (count >= 0) {
System.out.println("Welcome to Java");
}
b.
C.
d.
Dai
}
e. infinity
a.
b.
E60 00
2. What is the output of the following code?
C.
d.
e.
8
int x = 0;
while (x < 4) {
x=x+1;
9
10
System.out.println("x is " + --x);
}
11
a.
b.
C.
d.
e.
3. What will be displayed when the following code is executed?
x is 0
x is 1
int number = 6;
while (number > 0) {
number -= 3;
System.out.print(number + " ");
x is 2
x is 3
x is 4
630
63
30
30-3
0-3
Transcribed Image Text:Chapter 5 Loops 1. How many times will the following code print "Welcome to Java"? int count = 0; while (count >= 0) { System.out.println("Welcome to Java"); } b. C. d. Dai } e. infinity a. b. E60 00 2. What is the output of the following code? C. d. e. 8 int x = 0; while (x < 4) { x=x+1; 9 10 System.out.println("x is " + --x); } 11 a. b. C. d. e. 3. What will be displayed when the following code is executed? x is 0 x is 1 int number = 6; while (number > 0) { number -= 3; System.out.print(number + " "); x is 2 x is 3 x is 4 630 63 30 30-3 0-3
4. What will be the output of the code below when executed"?
long num=12356;
long result=0;
while (num>0){
result=result* 10+ num%10;
num/=10;
}
System.out.println(result);
a.
0
b. 100
C. 123
d. 654321
e. 356
5. What is the value in count after the following loop is executed?
int count = 0;
do {
} while (count++ < 9);
System.out.println(count);
a.
b.
System.out.println("Welcome to Java");
C.
d.
e.
8
9
10
11
0
6. Analyze the following statement:
double sum = 0;
for (double d = 0; d <10;) {
d += 0.1;
sum += sum +d;
}
a. The program has a compile error because the adjustment is missing in the for loop.
b. The program has a compile error because the control variable in the for loop cannot be of the
double type.
c. The program runs in an infinite loop because d > 10 would always be true.
d. The program compiles and runs fine.
Transcribed Image Text:4. What will be the output of the code below when executed"? long num=12356; long result=0; while (num>0){ result=result* 10+ num%10; num/=10; } System.out.println(result); a. 0 b. 100 C. 123 d. 654321 e. 356 5. What is the value in count after the following loop is executed? int count = 0; do { } while (count++ < 9); System.out.println(count); a. b. System.out.println("Welcome to Java"); C. d. e. 8 9 10 11 0 6. Analyze the following statement: double sum = 0; for (double d = 0; d <10;) { d += 0.1; sum += sum +d; } a. The program has a compile error because the adjustment is missing in the for loop. b. The program has a compile error because the control variable in the for loop cannot be of the double type. c. The program runs in an infinite loop because d > 10 would always be true. d. The program compiles and runs fine.
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