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Programming
languages allow several
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types
of values: numeric, strings of
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letters,
Boolean
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numbers: 1
0 -433 6.022e+23 .01
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not numbers:
1,000 106 5%
7±2
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strings: "abc" 'efg' "
" "B&B's"
""
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not strings: ' '<tab>'
"a ' "\"
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Boolean: true false
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not Boolean: T F
yes no
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