Nested loop execution in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 3 using a nested loop.

C Sharp (C#)

for (int i = 1; i <= 3; i++) {
    for (int j = 1; j <= [1]; j++) {
        Console.WriteLine(j);
    }
}

Drag options to blanks, or click blank then click option'

Ai

B5

C3

Dj

Attempts:

3 left

💡 Hint

Common Mistakes

Using the outer loop variable 'i' as the inner loop limit causes incorrect output.

Setting the inner loop limit to 5 prints extra numbers.

The inner loop should run from 1 to 3 to print numbers 1, 2, and 3.

2fill in blank

medium

Complete the code to print a 3x3 grid of stars (*) using nested loops.

C Sharp (C#)

for (int row = 1; row <= 3; row++) {
    for (int col = 1; col <= [1]; col++) {
        Console.Write("*");
    }
    Console.WriteLine();
}

Drag options to blanks, or click blank then click option'

A5

Bcol

Crow

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using the outer loop variable 'row' as the inner loop limit causes inconsistent stars per row.

Setting the inner loop limit to 5 prints too many stars.

The inner loop must run 3 times to print 3 stars per row.

3fill in blank

hard

Fix the error in the nested loops to correctly print pairs of numbers.

C Sharp (C#)

for (int x = 1; x <= 2; x++) {
    for (int y = 1; y <= [1]; y++) {
        Console.WriteLine($"({x}, {y})");
    }
}

Drag options to blanks, or click blank then click option'

Ax

B2

C3

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Using the outer loop variable 'x' as the inner loop limit causes incorrect pairs.

Setting the inner loop limit to 3 prints extra pairs.

The inner loop should run 2 times to print pairs (1,1), (1,2), (2,1), (2,2).

4fill in blank

hard

Fill both blanks to create a nested loop that prints a multiplication table for 1 to 3.

C Sharp (C#)

for (int i = 1; i <= [1]; i++) {
    for (int j = 1; j <= [2]; j++) {
        Console.Write($"{i * j} ");
    }
    Console.WriteLine();
}

Drag options to blanks, or click blank then click option'

A3

B5

C4

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using different limits for the loops causes incomplete or extra rows/columns.

Setting limits higher than 3 prints a larger table than required.

Both loops should run from 1 to 3 to print a 3x3 multiplication table.

5fill in blank

hard

Fill all three blanks to create a nested loop that prints a right-angled triangle of stars.

C Sharp (C#)

for (int row = 1; row <= [1]; row++) {
    for (int col = 1; col <= [2]; col++) {
        if (col <= [3]) {
            Console.Write("*");
        }
    }
    Console.WriteLine();
}

Drag options to blanks, or click blank then click option'

A5

Brow

Ccol

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'col' instead of 'row' in the if condition prints incorrect patterns.

Setting different limits for loops causes uneven triangle shapes.

The outer and inner loops run 5 times. The if condition prints stars up to the current row number to form a triangle.