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AP Computer Science A Unit 4 Study Guide
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AP Computer Science A Unit 4 Study Guide
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AP Computer Science A Unit 4 Study Guideint a = 0;
int b = 0;
while (a < 5 && b < 3) {
System.out.println(a + " " + b);a++;b++;
}
What is output? - Answer -0 0 1 1 2 2
int n = 14;
while (!(n % 3 == 0 && n % 5 == 0)) {
System.out.println(n);
n += 2;
}
What is the last number printed by this code? - Answer -28
What is one potential problem with the following loop?
System.out.print("Enter integers. Enter -1 to exit.");
System.out.println(" Count of integers entered will be returned.");
int n = 0;
int c = 0
;while (n != -1) {
n = scan.nextInt();
c++;
}
System.out.println(c); - Answer -The loop counts when the user enters -1 into the keyboard, so the count will be one too many.
What is one potential problem with the following loop?
int n = 5;
while (n != -1) {
System.out.println(n);
} - Answer -Since n does not change the loop will not stop.
int n = 4;
while (n <= 15) {
n += 2;
System.out.print(n + " ");
}
What is output? - Answer -6 8 10 12 14 16
int n = 80;
while (n > 40) {
System.out.print(n % 10 + " ");
n -= 5;
}
What is output? - Answer -0 5 0 5 0 5 0 5
What is output to the screen by the following code:
int n = 3;
while (n < 7)
{
n++;
System.out.print(n + " ");
} - Answer -4 5 6 7
What is output to the screen by the following code:
int n = 10;
while (5 < n)
{
n--;
System.out.print(n + " ");
} - Answer -9 8 6 7 5
Often on the AP exam they ask you to print out the first and last number printed by a loop. What are the first and last values printed by:
int n = 5;
while (n < 32) {
n += 5;
System.out.print(n + " ");
} - Answer -10 35
What are the first and last numbers printed by the following code:
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