What factors guide the choice of identifiers in Programs ?
What factors guide the choice of identifiers in Programs ?
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1. An identifier must start with a letter or underscore followed by any number of digits or/ and letters.
2. No special character (other than under-score) should be included in the identifier.
3. No reserved word or standard identifier should be used.
4. Upper and lower case letters are different. All characters are significant.
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