Basic Pseudocode Questions (2) | 现代数学启蒙

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Q26:How do you define a procedure in pseudocode?

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Q26: How do you define a procedure in pseudocode?

A26:

Q27:Write a procedure `Greet` that outputs "Hello".

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Q27: Write a procedure Greet that outputs "Hello".

A27:

Q28:How do you call a procedure named `DisplayMessage`?

Answers:

Q28: How do you call a procedure named DisplayMessage?

A28: CALL DisplayMessage()

Q29:How can parameters be passed to a procedure?

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Q29: How can parameters be passed to a procedure?

A29: By including them in parentheses, e.g.:

Q30:Write a procedure `Square` that calculates and outputs the square of a number passed as a parameter.

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Q30: Write a procedure Square that calculates and outputs the square of a number passed as a parameter.

A30:

Q31: How do you define a function in pseudocode?

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Q31: How do you define a function in pseudocode?

A31:

Q32:Write a function `Add` that takes two integers and returns their sum.

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Q32: Write a function Add that takes two integers and returns their sum.

A32:

Q33:How is a function called in pseudocode?

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Q33: How is a function called in pseudocode?

A33: As part of an expression, e.g., Result ← Add(5, 3)

Q34:What is the difference between a procedure and a function?

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Q34: What is the difference between a procedure and a function?

A34: A procedure performs actions but does not return a value, while a function performs actions and returns a value.

Q35:Write a function `IsEven` that returns `TRUE` if a number is even, otherwise `FALSE`.

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Q35: Write a function IsEven that returns TRUE if a number is even, otherwise FALSE.

A35:

Q36:How do you open a text file for reading in pseudocode?

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Q36: How do you open a text file for reading in pseudocode?

A36: OPENFILE "filename" FOR READ

Q37: How do you write data to a text file?

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Q37: How do you write data to a text file?

A37:

Q38:Write an example of reading a line from a file named `InputFile`.

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Q38: Write an example of reading a line from a file named InputFile.

A38:

Q39:How can you check if the end of a file has been reached?

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Q39: How can you check if the end of a file has been reached?

A39: Using the EOF function, e.g., WHILE NOT EOF("InputFile").

Q40: Write pseudocode to copy all lines from `FileA` to `FileB`.

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Q40: Write pseudocode to copy all lines from FileA to FileB.

A40:

Q41:What are the relational operators in pseudocode?

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Q41: What are the relational operators in pseudocode?

A41: >, <, >=, <=, =, <>.

Q42:Write a condition to check if `X` is between 10 and 20.

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Q42: Write a condition to check if X is between 10 and 20.

A42: IF X >= 10 AND X <= 20 THEN

Q43:What are the logical operators in pseudocode?

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Q43: What are the logical operators in pseudocode?

A43: AND, OR, NOT.

Q44:How would you negate the condition `X > 5`?

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Q44: How would you negate the condition X > 5?

A44: NOT (X > 5)

Q45:Write a condition to check if a number is either less than 5 or greater than 10.

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Q45: Write a condition to check if a number is either less than 5 or greater than 10.

A45: IF X < 5 OR X > 10 THEN

Q46:How do you get the length of a string in pseudocode?

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Q46: How do you get the length of a string in pseudocode?

A46: LENGTH(<string>)

Q47: Write an example to extract the first three characters of a string `Name`.

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Q47: Write an example to extract the first three characters of a string Name.

A47: OUTPUT MID(Name, 1, 3)

Q48: How do you concatenate two strings `FirstName` and `LastName`?

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Q48: How do you concatenate two strings FirstName and LastName?

A48: OUTPUT FirstName & " " & LastName

Q49:Write pseudocode to convert a character `A` to lowercase.

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Q49: Write pseudocode to convert a character A to lowercase.

A49: OUTPUT LCASE('A')

Q50: How do you get the rightmost 5 characters of a string `Word`?

Answers:

Q50: How do you get the rightmost 5 characters of a string Word?

A50: OUTPUT RIGHT(Word, 5)

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Q26:How do you define a procedure in pseudocode?

Q27:Write a procedure Greet that outputs "Hello".

Q28:How do you call a procedure named DisplayMessage?

Q29:How can parameters be passed to a procedure?

Q30:Write a procedure Square that calculates and outputs the square of a number passed as a parameter.

Q31: How do you define a function in pseudocode?

Q32:Write a function Add that takes two integers and returns their sum.

Q33:How is a function called in pseudocode?

Q34:What is the difference between a procedure and a function?

Q35:Write a function IsEven that returns TRUE if a number is even, otherwise FALSE.

Q36:How do you open a text file for reading in pseudocode?

Q37: How do you write data to a text file?

Q38:Write an example of reading a line from a file named InputFile.

Q39:How can you check if the end of a file has been reached?

Q40: Write pseudocode to copy all lines from FileA to FileB.

Q41:What are the relational operators in pseudocode?

Q42:Write a condition to check if X is between 10 and 20.

Q43:What are the logical operators in pseudocode?

Q44:How would you negate the condition X > 5?

Q45:Write a condition to check if a number is either less than 5 or greater than 10.

Q46:How do you get the length of a string in pseudocode?

Q47: Write an example to extract the first three characters of a string Name.

Q48: How do you concatenate two strings FirstName and LastName?

Q49:Write pseudocode to convert a character A to lowercase.

Q50: How do you get the rightmost 5 characters of a string Word?

Q27:Write a procedure `Greet` that outputs "Hello".

Q28:How do you call a procedure named `DisplayMessage`?

Q30:Write a procedure `Square` that calculates and outputs the square of a number passed as a parameter.

Q32:Write a function `Add` that takes two integers and returns their sum.

Q35:Write a function `IsEven` that returns `TRUE` if a number is even, otherwise `FALSE`.

Q38:Write an example of reading a line from a file named `InputFile`.

Q40: Write pseudocode to copy all lines from `FileA` to `FileB`.

Q42:Write a condition to check if `X` is between 10 and 20.

Q44:How would you negate the condition `X > 5`?

Q47: Write an example to extract the first three characters of a string `Name`.

Q48: How do you concatenate two strings `FirstName` and `LastName`?

Q49:Write pseudocode to convert a character `A` to lowercase.

Q50: How do you get the rightmost 5 characters of a string `Word`?