Boolean Expressions and Flowcharts

Which of the following is the correct operator to check for equality in a Boolean expression?

Given x = 5 and y = 10, what is the result of the boolean expression (x > 3) && (y < 12)?

What keyword is typically used to declare a boolean variable?

In a flowchart, which symbol represents a condition?

What is the primary purpose of a flowchart?

What is the function of the if statement in programming?

Consider the code: if (x > 5) { x = x + 2; }. If x is initially 3, what will be the value of x after this code executes?

When does the code within an if statement get executed?

In an if...else statement, what happens if the condition is false?

Given the code: if (age >= 18) { Console.WriteLine("Adult"); } else { Console.WriteLine("Minor"); }. What will be printed if age is 15?

What is the purpose of the else statement in an if-else construct?

In a program to determine if a number is even or odd, what is the correct conditional statement to use within an if...else block?

Consider the following code snippet: if (condition) { statement1; } else { statement2; }. If condition evaluates to true, which statement is executed?

What is a 'nested if' statement?

What will be the output of the following nested if statement if x = 10 and y = 5?

if (x > 5) {
    if (y < 10) {
        Console.WriteLine("Condition Met");
    }
}

In the context of nested if statements, under what condition is the innermost block of code executed?

Given the code:

int x = 5;
if (x > 10) {
    if (x < 20) {
        Console.WriteLine("Range 1");
    } else {
        Console.WriteLine("Range 2");
    }
} else {
    Console.WriteLine("Range 3");
}

What will be printed?

Which of the following scenarios is best suited for using a nested if statement?

What is the primary purpose of a switch statement?

In a switch statement, what happens when a case matches the switch expression?

What is the purpose of the break statement in a switch statement?

Which data types can be used for the expression in the switch statement in most programming languages?

What is the purpose of the default case in a switch statement?

Given the following switch statement:

int day = 4;
string dayName;
switch (day) {
    case 1: dayName = "Sunday"; break;
    case 2: dayName = "Monday"; break;
    case 3: dayName = "Tuesday"; break;
    default: dayName = "Unknown"; break;
}
Console.WriteLine(dayName);

What will be the output?

When is the default case in a switch statement executed?

Which statement is used to skip the rest of the code in the current case and exit a switch statement?

Given the following code:

int value = 3;
switch (value) {
    case 1: Console.WriteLine("One");
    case 2: Console.WriteLine("Two");
    case 3: Console.WriteLine("Three");
    case 4: Console.WriteLine("Four");
}

What will be printed?

What would be the output of the following code?

int num = 2;
switch (num) {
  case 1:
    Console.WriteLine("One");
    break;
  case 2:
  case 3:
    Console.WriteLine("Two or Three");
    break;
  default:
    Console.WriteLine("Other");
    break;
}

Under what circumstance might you choose to use multiple if-else if-else statements rather than a switch statement?

What is the potential issue if you forget to include a break statement at the end of each case in a switch statement?

Consider this code:

int grade = 85;
char letterGrade;
if (grade >= 90) { letterGrade = 'A'; }
else if (grade >= 80) { letterGrade = 'B'; }
else if (grade >= 70) { letterGrade = 'C'; }
else { letterGrade = 'D'; }
Console.WriteLine(letterGrade);

What will be printed?

In a series of if-else if-else statements, when is the else block executed?

What is the key difference between using a series of independent if statements versus an if-else if-else structure?

Rewrite the following if-else if-else statement using nested if statements:

if (condition1) { statement1; }
else if (condition2) { statement2; }
else { statement3; }

Why might nested if statements become harder to read and manage compared to a switch statement or if-else if-else structure?

You are tasked with writing a program that checks a student's score and assigns a grade based on the following ranges: 90-100: A, 80-89: B, 70-79: C, Below 70: D. Which conditional structure is best suited for this task?

Consider the following program:

int num = 15;
if (num > 10) {
  if (num < 20) {
    Console.WriteLine("In range 10-20");
  } else {
    Console.WriteLine("Greater than 20");
  }
} else {
  Console.WriteLine("Less than or equal to 10");
}

What will be printed?

Given this code, what is the result when the value of fruit is "orange"?

string fruit = "orange";
 string result;
 switch (fruit) {
 case "apple":
 result = "red";
 break;
 case "banana":
 result = "yellow";
 break;
 default:
 result = "unknown";
 break;
 }
 Console.WriteLine(result);

What is the output of the following program?

bool hasLicense = true;
bool hasInsurance = false;

if(hasLicense) {
  if(hasInsurance) {
    Console.WriteLine("Can drive");
  } else {
    Console.WriteLine("Needs insurance");
  }
} else {
  Console.WriteLine("Needs license");
}

If you need to check for multiple conditions simultaneously and those conditions are related to ranges of values, which conditional statement is most appropriate?