Podcast
Questions and Answers
Which of the following best describes the primary difference between a math operation and a logic operation?
Which of the following best describes the primary difference between a math operation and a logic operation?
- Math operations produce a new numerical result, while logic operations make a decision based on a comparison. (correct)
- Logic operations are performed by the CPU, while math operations are handled by the RAM.
- Math operations are used for input and output, while logic operations are used for data storage.
- Math operations always involve decimals, while logic operations only use integers.
In programming, an 'if' statement allows a program to execute specific code only when a certain condition is false.
In programming, an 'if' statement allows a program to execute specific code only when a certain condition is false.
False (B)
In the context of if statements, what symbols are used to enclose the code that will be executed if the condition is true?
In the context of if statements, what symbols are used to enclose the code that will be executed if the condition is true?
{ }
The comparison operator > means ______ than.
The comparison operator > means ______ than.
Match the comparison operator with its description:
Match the comparison operator with its description:
Given the following code snippet, under what condition will the message "You are the coolest person in the whole world!!!" be printed?
Given the following code snippet, under what condition will the message "You are the coolest person in the whole world!!!" be printed?
When comparing strings in Java, str1 == str2 is the preferred method, as it directly compares the content of the strings.
When comparing strings in Java, str1 == str2 is the preferred method, as it directly compares the content of the strings.
What is the difference between strWord.equals(strOtherWord) and strWord.equalsIgnoreCase(strOtherWord) when comparing strings?
What is the difference between strWord.equals(strOtherWord) and strWord.equalsIgnoreCase(strOtherWord) when comparing strings?
The substring command requires a starting ______ and an ending ______.
The substring command requires a starting ______ and an ending ______.
If a string is 'Hello', what will str.substring(1, 4) return?
If a string is 'Hello', what will str.substring(1, 4) return?
In the tip calculator example, the tax calculation uses an if statement because the tax rate depends on the quality of service.
In the tip calculator example, the tax calculation uses an if statement because the tax rate depends on the quality of service.
In the tip calculator example, what will be the tip amount if the meal cost is $50 and the service is rated as 'basic' (1)?
In the tip calculator example, what will be the tip amount if the meal cost is $50 and the service is rated as 'basic' (1)?
If all the if and else if conditions in a conditional structure are false, the code inside the ______ block will be executed.
If all the if and else if conditions in a conditional structure are false, the code inside the ______ block will be executed.
Which of the following is the correct syntax for combining two conditions in an if statement such that both conditions must be true?
Which of the following is the correct syntax for combining two conditions in an if statement such that both conditions must be true?
The || operator in a conditional statement requires that both conditions being compared are true for the combined condition to be true.
The || operator in a conditional statement requires that both conditions being compared are true for the combined condition to be true.
In the height example, what range of heights in inches is considered 'average height'?
In the height example, what range of heights in inches is considered 'average height'?
For the condition (x > 5 && x < 10) to be true, x must be ______ than 5 and ______ than 10.
For the condition (x > 5 && x < 10) to be true, x must be ______ than 5 and ______ than 10.
What will be the output if intInches is 72 in the following code?
What will be the output if intInches is 72 in the following code?
In the code examples given, any open squiggly bracket does not necessarily need to have a corresponding closed squiggly bracket.
In the code examples given, any open squiggly bracket does not necessarily need to have a corresponding closed squiggly bracket.
In the Rotten Tomatoes score code example, what will the output be if the intRTScore is 60?
In the Rotten Tomatoes score code example, what will the output be if the intRTScore is 60?
Flashcards
Logic Operation
Logic Operation
Takes two or more numbers, compares them, and makes a decision based on the comparison result.
If Statement
If Statement
Controls a block of code that runs only when a specified condition is true.
Greater Than (>) Operator
Greater Than (>) Operator
Evaluates if a value is greater than another.
Less Than (<) Operator
Less Than (<) Operator
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Greater Than or Equal To (>=) Operator
Greater Than or Equal To (>=) Operator
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Less Than or Equal To (<=) Operator
Less Than or Equal To (<=) Operator
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Equals (==) Operator
Equals (==) Operator
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Not Equals (!=) Operator
Not Equals (!=) Operator
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String.equals(otherString)
String.equals(otherString)
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String.equalsIgnoreCase(otherString)
String.equalsIgnoreCase(otherString)
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substring(startIndex, endIndex)
substring(startIndex, endIndex)
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Else If Statement
Else If Statement
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Else Statement
Else Statement
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AND (&&) Operator
AND (&&) Operator
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OR (||) Operator
OR (||) Operator
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Study Notes
- The unit covers CPU Logic Commands, focusing on
ifstatements after discussing keyboard input, screen output, data storage in RAM, and CPU math operations.
Math vs. Logic
- Math involves performing operations on numbers to produce a new numerical result.
- Logic involves comparing numbers to make a decision based on the comparison's outcome.
- Example: Calculating a restaurant tip (math) vs. deciding what to order based on menu prices and available money (logic).
if Statements
ifstatements are CPU Logic Commands that control whether the code within curly{}brackets is executed.- The code inside
{}only runs if the condition inside the round()brackets is true. - Syntax:
if(somecondition){ //run some code if the condition is true }
Comparison Operators
>: greater than<: less than>=: greater than or equal to<=: less than or equal to==: equals!=: does not equal
String Comparisons
- Comparing strings differs significantly from comparing numbers.
strWord.equals(strOtherWord): Checks if two strings match exactly.strWord.equalsIgnoreCase(strOtherWord): Checks if two strings match, ignoring case.!strWord.equals(strOtherWord): Checks if two strings do not match exactly.!strWord.equalsIgnoreCase(strOtherWord): Checks if two strings do not match, even when ignoring case.
substring Command
- Retrieves specific letters from a string to create a new string.
- Requires specifying a start index number and an end index number.
- Grabs the letters between the specified indices.
else if Statements
- If the initial
ifstatement's condition is false, theelse ifstatement checks another condition. - If the
else ifcondition is true, the code inside its{}brackets is executed.
else Statements
- If all preceding
ifandelse ifconditions are false, the code within theelsestatement's{}brackets is executed.
Real-Life Logic
- Humans constantly use logic and
if/elsestatements in their decision-making processes.
Code Syntax Notes
- Every open curly bracket
{must have a corresponding closing curly bracket}. - Every open round bracket
(must have a corresponding closing round bracket).
Logic Combining Conditions
&&: AND logic requires both conditions to be true for theiforelse ifstatement to execute.||: OR logic requires at least one condition to be true for theiforelse ifstatement to execute.
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