computer quiz

What is the purpose of an if statement in C++?

• To execute a block of code repeatedly
• To make decisions and execute a block of code conditionally
• To perform arithmetic operations
• To declare variables

Which of the following is the correct syntax for an if statement in C++?

• if condition {}
• if (condition) {}
• if: condition {}
• if [condition] {}

How does an if statement determine which code block to execute?

• By comparing values
• By looping through statements
• By evaluating a condition to true or false
• By checking data types

In C++, what will the following code print if x is 5? if (x > 0) cout << "Positive";

• Positive
• Nothing
• Syntax error
• Negative

What keyword is used to specify an alternative block of code in an if statement when the condition is false?

• else
• elseif
• alternative
• or

Which of the following correctly checks if x is not equal to 0 in an if statement?

• if (x == 0)
• if (x != 0)
• if (x >= 0)
• if (x <= 0)

What is the output of this code snippet if x is 5 and y is 10? if (x > y) cout << "X"; else cout << "Y";

• X
• Y
• X and Y
• Syntax error

In the code if (a == b), what does the == operator do?

• Assigns the value of b to a
• Checks if a is greater than b
• Checks if a is equal to b
• Checks if a is less than b

What is the purpose of curly braces {} in an if statement?

• To denote the condition
• To separate multiple conditions
• To define the block of code to execute
• To indicate the end of an if statement

Which of the following is the correct syntax for an else if statement in C++?

• else if (condition) {}
• elseif (condition) {}
• else (condition) {}
• if else (condition) {}