Can we redefine an existing X(100) field with a new field of X(200)?
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Yes
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No
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None of the above
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All of the above
In COBOL, the REDEFINES clause allows a larger field to redefine a smaller field, though only the original size is actually available in memory. The redefining field's description can be X(200) even if it redefines X(100) - this is syntactically valid. The compiler allows this, but only the first 100 characters from the 200-character field description are usable. The answer 'Yes' is technically correct as the statement is allowed.
To answer this question, we need to understand the concept of redefining fields in programming.
In programming, fields are variables or data structures that hold values. They are defined with a specific data type and size.
When it comes to redefining an existing field, it depends on the programming language and the specific situation. However, in general, it is possible to redefine an existing field with a new field of a different size.
In this case, the question asks if we can redefine an existing X(100) field with a new field of X(200). The correct answer is A) Yes. This means that it is possible to redefine an existing field with a larger size, in this case, going from X(100) to X(200).
It is important to note that when redefining fields, you should consider the impact on the program and any potential issues that may arise from changing the size of the field.