Introduction to Computing

ทดสอบข้อที่ 1

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ทดสอบข้อที่ 2

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Which one of the following variables is illegal?

• 3dGraph
• May1998
• Price_per_set
• data_val

For this statement, “value = $6,123.44” Will it cause the error?

• Yes
• No

What is a variable?

• A 2 decimal or string format output.
• A name that references a value in the computer's memory.
• A function that retrieves data from the user.
• A syntax of programming language.

If we declare the variables data_1 and Data_1 will the values be exactly alike?

• No, because it is case sensitive.
• No, because of the variables is illegal
• Yes, because it is case sensitive.
• Yes, because they all contain numbers and letters.

Which one of his following will refer to an Int?

• data = ‘10’
• data = 10
• data = 10.0
• dat =”10.0000000”

Which one of his following will refer to a Float?

• num = 45.9
• num = “45.987”
• num = 89
• num = 99 + 20