Correct! A do-while loop executes the body first and only tests the stop condition afterward.

The break statement jumps control immediately out of the enclosing loop.

Model Answer: To solve this, initialize a string variable with a single '#' character. In each iteration of a 'for' loop, check if the string's length is less than eight. Inside the body, log the string, then update it by appending another '#' until seven lines are printed successfully.

Model Answer: This program uses a 'for' loop to iterate from 1 to 100. Inside, we apply conditional branching. First, check if a number is divisible by both 3 and 5 using the remainder operator (n % 15 == 0) to print 'FizzBuzz'. If that fails, check if it is divisible by 3 for 'Fizz' or 5 for 'Buzz'. If none match, print the number itself. This logic demonstrates how order of operations in conditional branches is critical; checking for the combined 'FizzBuzz' case first prevents the program from incorrectly stopping at the simpler 'Fizz' or 'Buzz' conditions.

Model Answer: To build an 8x8 checkerboard, we represent the grid using a single string and two nested 'for' loops. The outer loop handles the vertical rows (y-axis), while the inner loop handles the horizontal columns (x-axis). At each grid position (x, y), we decide whether to add a space or a '#' character. The mathematical trick is to check if the sum of the current x and y indices is even or odd: (x + y) % 2 == 0. If even, add a space; if odd, add '#'. After the inner loop completes a row, append a newline character ('\n') to start the next line. By defining a 'size' variable (e.g., size = 8) and using it as the loop limit for both x and y, the program becomes dynamic. This allows the user to generate a grid of any dimensions (e.g., 10x10 or 20x20) simply by changing one variable value.