DCS1101 - Week 4 (Conditions)

Week 4 - Conditions

Making decisions and program flow

Draw

Last week, we used flowcharts. Which symbol represents a process?

Poll

When you make a decision, do you always have all the information you need?

• Yes

• No

Poll

Can a good decision still lead to a bad outcome?

• Yes

• No

Multiple Choice

According to the video, what defines a good decision?

• The result is always successful

• The decision uses available information logically

• The decision avoids risk completely

• The decision avoids risk completely

Multiple Choice

Why is long-term thinking important in programming?

• Code never changes

• One mistake ends a program

• Programs run only once

• Learning improves through repeated decisions and fixes

Multiple Choice

In a problem analysis chart, where do decisions usually belong — input, process, or output?

• process
• output
• input

Multiple Choice

What is the result of this expression?

10 < 5

• false
• true
• 5 < 10
• 10 > 5

Open Ended

If marks = 45, what will be printed?

if (marks >= 50)

cout << "Pass";

else

cout << "Fail";

Open Ended

Why might one condition not be enough in real-life problems?

Multiple Choice

[HOTSPOT] What is the output?

int mark = 48;

if (mark >= 50)

cout << "Pass";

else

cout << "Try Again";

• Try Again
• Compilation Error
• No Output
• Pass

Open Ended

Find the error of this code:

int score = 75;

else (score == 75) {

cout << "Exactly 75";

}

Fill in the Blanks

[HOTSPOT] A cinema gives a student discount when the customer's age is 18 or below.

Complete the condition:

if (​ ​

) {

cout << "Student Discount";

}

Multiple Choice

Which condition checks whether age is at least 20?

• age <= 20
• age >= 20
• age > 20
• age == 20

Multiple Choice

[HOTSPOT] What is the output of this code?

int number = 7;

if (number % 2 == 0)

cout << "Even";

else

cout << "Odd";

• Even
• Odd
• 7
• Error

Multiple Choice

[HOTSPOT] What is the error of this code?

int score = 80;

if (score = 80)

cout << "Excellent";

• if (score == 80)
• if (score > 80)
• if (score != 80)
• if (score = 80)

Multiple Choice

Which condition checks whether age is between 18 and 60 inclusive?

• age > 18 && age < 60
• age > 18 && age <= 60
• age >= 18 && age <= 60
• age >= 18 || age <= 60

Draw

Draw the flowchart for the following code:

if (mark >= 50)

cout << "Pass";

else

cout << "Fail";