04 Loops and Iteration Online Quiz Questions

Suppose count is initialized to 10. How many times does the body of while (count < 5) { ... } execute, assuming no code outside the shown loop changes count?

A C++ do-while loop executes its body at least once, even when its condition is initially false.

Which C++ loop statement is most appropriate for processing every integer from 0 through n - 1 when n is known before the loop begins?

Which statement correctly describes the execution of a C++ for loop?

If a break statement runs inside an inner loop nested within an outer loop, it exits only the inner loop.

Select all statements that correctly describe what happens when continue executes in a C++ for loop.

A loop initializes total to 0 and executes total += number for every integer number from 1 through 10, inclusive. What is the final value of total?

What does this loop print?

for (int number = 1; number <= 10; ++number) {
if (number % 2 == 0) {
continue;
}
std::cout << number << ' ';
}

Select all recommendations that the material gives for writing reliable and maintainable loops.

Explain the differences among C++ while, do-while, and for loops. For each type, describe when its condition is tested, whether its body can execute zero times, and a situation in which that loop is an appropriate choice. Also explain why initialization and progress toward termination matter.

How many times does the inner body execute in this code?

for (int row = 1; row <= 3; ++row) {
for (int column = 1; column <= 4; ++column) {
std::cout << '(' << row << ',' << column << ") ";
}
}

What does this C++ code print?

int count = 2;

while (count < 5) {

std::cout << count << ' ';

++count;

}

A variable choice is initialized to 0 and then used in this loop:

do {

std::cout << "Menu";

} while (choice != 0);

How many times does the body execute?

What does this C++ code print?

for (int number = 1; number <= 5; ++number) {

if (number % 2 == 0) {

continue;

}

std::cout << number << ' ';

}

How many lines does this nested-loop program output?

for (int row = 0; row < 3; ++row) {

for (int column = 0; column < 3; ++column) {

if (column == 1) {

break;

}

std::cout << row << ", " << column << '\n';

}

}

True or false: In a while loop, placing continue before the update of the variable used in the loop condition can cause an infinite loop.

What integer value is stored in total after this loop finishes?

int total = 0;

for (int value = 1; value <= 5; ++value) {

total += value;

}

What programming term names a variable that stores a running total or combined result while a loop executes?