Author Question: Which of the following loops correctly computes 1/2 + 2/3 + 3/4 + ... + 99/100?A:double sum = 0;for ... (Read 38 times)

Kthamas · **on:** May 6, 2020

Question 1

Which of the following loops prints "Welcome to Java" 10 times?

A:
for (int count = 1; count <= 10; count++) {
System.out.println("Welcome to Java");
}

B:
for (int count = 0; count < 10; count++) {
System.out.println("Welcome to Java");
}

C:
for (int count = 1; count < 10; count++) {
System.out.println("Welcome to Java");
}

D:
for (int count = 0; count <= 10; count++) {
System.out.println("Welcome to Java");
}

◦ BC
◦ AC
◦ BD
◦ ABC
◦ AB

Question 2

Which of the following loops correctly computes 1/2 + 2/3 + 3/4 + ... + 99/100?

A:
double sum = 0;
for (int i = 1; i <= 99; i++) {
sum = i / (i + 1);
}
System.out.println("Sum is " + sum);

B:
double sum = 0;
for (int i = 1; i < 99; i++) {
sum += i / (i + 1);
}
System.out.println("Sum is " + sum);

C:
double sum = 0;
for (int i = 1; i <= 99; i++) {
sum += 1.0 * i / (i + 1);
}
System.out.println("Sum is " + sum);

D:
double sum = 0;
for (int i = 1; i <= 99; i++) {
sum += i / (i + 1.0);
}
System.out.println("Sum is " + sum);

E:
double sum = 0;
for (int i = 1; i < 99; i++) {
sum += i / (i + 1.0);
}
System.out.println("Sum is " + sum);

◦ CD
◦ BCD
◦ B
◦ CDE
◦ ABCD

jessicaduplan · **Reply #1 on:** May 6, 2020

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