What is the scope of an external variable?
A. Whole source file in which it is defined
B. From the point of declaration to the end of the file in which it is defined
C. Any source file in a program
D. From the point of declaration to the end of the file being compiled
Answer: Option D
Related Questions on Function
In C, what is a function primarily used for?
A. Decision making
B. Variable declaration
C. Code organization and reusability
D. Printing output
What is the purpose of a function prototype in C?
A. To declare a function's return type
B. To declare a function's name
C. To declare a function's parameters and return type
D. To declare a function's name and parameters
In C, how are function arguments passed by default?
A. By value
B. By reference
C. By pointer
D. By address
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