Continue statement behavior in C Sharp (C#) - Mini Project: Build & Apply

Continue Statement Behavior

📖 Scenario: Imagine you are checking a list of daily temperatures to find which days were warm enough to go outside. You want to skip cold days and only note the warm days.

🎯 Goal: You will write a program that uses the continue statement to skip cold days and print only the warm days from a list of temperatures.

📋 What You'll Learn

Create an integer array called temperatures with the exact values: 15, 22, 8, 30, 12

Create an integer variable called warmThreshold and set it to 20

Use a for loop with the variable i to iterate over temperatures

Inside the loop, use an if statement to continue when the temperature is less than warmThreshold

Print the warm temperatures only using Console.WriteLine

💡 Why This Matters

🌍 Real World

Skipping unwanted data is common when processing lists, like ignoring cold days when planning outdoor activities.

💼 Career

Understanding how to control loops with <code>continue</code> helps in writing efficient code that processes only needed data.

1

Create the temperature data

Create an integer array called temperatures with these exact values: 15, 22, 8, 30, 12.

C Sharp (C#)

// Your code here

Hint

Use int[] temperatures = { ... }; to create the array with the exact numbers.

2

Set the warm temperature threshold

Create an integer variable called warmThreshold and set it to 20.

C Sharp (C#)

int[] temperatures = { 15, 22, 8, 30, 12 };
// Your code here

Hint

Use int warmThreshold = 20; to set the threshold.

3

Use a for loop with continue to skip cold days

Use a for loop with the variable i to iterate over temperatures. Inside the loop, use an if statement to continue when temperatures[i] is less than warmThreshold.

C Sharp (C#)

int[] temperatures = { 15, 22, 8, 30, 12 };
int warmThreshold = 20;
// Your code here

Hint

Use for (int i = 0; i < temperatures.Length; i++) and inside it, if (temperatures[i] < warmThreshold) continue;.

4

Print only the warm temperatures

Inside the for loop, after the continue statement, add a Console.WriteLine statement to print temperatures[i].

C Sharp (C#)

int[] temperatures = { 15, 22, 8, 30, 12 };
int warmThreshold = 20;
for (int i = 0; i < temperatures.Length; i++)
{
    if (temperatures[i] < warmThreshold)
        continue;
    // Your code here
}

Hint

Use Console.WriteLine(temperatures[i]); to print the warm temperatures.

Practice

1. What does the continue statement do inside a loop in C#?

easy

A. Stops the entire loop immediately

B. Skips the rest of the current loop iteration and moves to the next one

C. Exits the current method

D. Repeats the current iteration without moving forward

Solution

1. Step 1: Understand the role of continue in loops

   The continue statement tells the loop to skip the remaining code in the current iteration.

2. Step 2: Identify what happens after continue

   After skipping, the loop moves to the next iteration without stopping the whole loop.

3. Final Answer:

   Skips the rest of the current loop iteration and moves to the next one -> Option B

4. Quick Check:

   continue skips current iteration [OK]

Hint: Remember: continue skips current loop step, not whole loop [OK]

Common Mistakes:

• Confusing continue with break
• Thinking continue exits the method
• Assuming continue repeats the iteration

2. Which of the following is the correct syntax to use continue inside a for loop in C#?

easy

A. continue;

B. continue()

C. continue {}

D. continue[]

Solution

1. Step 1: Recall the syntax of continue

   In C#, continue is a statement and must be followed by a semicolon.

2. Step 2: Check each option

   Only continue; is valid syntax. The others use parentheses, braces, or brackets incorrectly.

3. Final Answer:

   continue; -> Option A

4. Quick Check:

   Correct syntax ends with semicolon [OK]

Hint: Use semicolon after continue, no parentheses [OK]

Common Mistakes:

• Adding parentheses after continue
• Using braces or brackets with continue
• Omitting the semicolon

3. What will be the output of the following C# code?

for (int i = 1; i <= 5; i++) {
  if (i == 3) continue;
  Console.Write(i + " ");
}

medium

A. 2 3 4 5

B. 1 2 3 4 5

C. 1 2 3 4

D. 1 2 4 5

Solution

1. Step 1: Analyze the loop and condition

   The loop runs from 1 to 5. When i equals 3, continue skips printing.

2. Step 2: Determine printed values

   Numbers 1, 2, 4, and 5 are printed with spaces. Number 3 is skipped.

3. Final Answer:

   1 2 4 5 -> Option D

4. Quick Check:

   continue skips printing 3 [OK]

Hint: Skip printing when continue triggers, others print [OK]

Common Mistakes:

• Including the skipped number in output
• Confusing continue with break
• Ignoring spaces in output

4. Identify the error in this C# code snippet using continue:

int i = 0;
while (i < 3) {
  if (i == 1)
    continue;
  Console.Write(i);
  i++;
}

medium

A. Syntax error: continue cannot be used in while loop

B. Missing semicolon after continue

C. Infinite loop because i++ is skipped when i == 1

D. Console.Write should be Console.WriteLine

Solution

1. Step 1: Understand loop behavior with continue

   When i == 1, continue skips i++, so i stays 1 forever.

2. Step 2: Identify the problem caused

   The loop never increments i past 1, causing an infinite loop.

3. Final Answer:

   Infinite loop because i++ is skipped when i == 1 -> Option C

4. Quick Check:

   continue skips i++ causing infinite loop [OK]

Hint: Ensure increments run before continue to avoid infinite loops [OK]

Common Mistakes:

• Thinking continue causes syntax error
• Ignoring loop variable increment
• Assuming Console.WriteLine fixes logic

5. You want to print all even numbers from 1 to 10 but skip printing 6 using a for loop and continue. Which code snippet correctly does this?

hard

A. for (int i = 2; i <= 10; i += 2) { if (i == 6) continue; Console.Write(i + " "); }

B. for (int i = 1; i <= 10; i++) { if (i % 2 == 0 && i != 6) Console.Write(i + " "); }

C. for (int i = 2; i <= 10; i++) { if (i % 2 == 0) Console.Write(i + " "); if (i == 6) continue; }

D. for (int i = 2; i <= 10; i += 2) { if (i == 6) break; Console.Write(i + " "); }

Solution

1. Step 1: Understand the goal

   Print even numbers 2,4,8,10 but skip 6 using continue inside a for loop.

2. Step 2: Check each option

   for (int i = 2; i <= 10; i += 2) { if (i == 6) continue; Console.Write(i + " "); } loops by 2, skips 6 with continue, prints others. for (int i = 1; i <= 10; i++) { if (i % 2 == 0 && i != 6) Console.Write(i + " "); } prints all evens except 6 but no continue used. for (int i = 2; i <= 10; i++) { if (i % 2 == 0) Console.Write(i + " "); if (i == 6) continue; } prints 6 because print happens before continue. for (int i = 2; i <= 10; i += 2) { if (i == 6) break; Console.Write(i + " "); } breaks at 6, stopping loop early, so 8 and 10 not printed.

3. Final Answer:

   for (int i = 2; i <= 10; i += 2) { if (i == 6) continue; Console.Write(i + " "); } -> Option A

4. Quick Check:

   Use continue to skip 6 in even-step loop [OK]

Hint: Loop evens, continue at 6 to skip it, print others [OK]

Common Mistakes:

• Using break instead of continue
• Not incrementing by 2 for evens
• Skipping continue and using if only