By convention, uppercase letters are used for type definitions ( such as STUDENT).
This is not a standard C convention.
In C upper case identifiers are conventionally used by macro definitions.
\0( NULL)
Please note that '\0' is not the same as NULL.
NULL is the null pointer constant which is a constant expression evaluating to 0 or (void *)0.
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This is not a standard C convention.
In C upper case identifiers are conventionally used by macro definitions.
Please note that '\0' is not the same as NULL.
NULL is the null pointer constant which is a constant expression evaluating to 0 or (void *)0.