Answer:
The correct answer is B)
System call errors can be reported using variable ""errno"" and function ""perror""
Step-by-step explanation:
The perror() function creates a message on standard error describing the last error encountered during a call to a system or library function
while
The <errno.h> header file defines symbolic names for each of the possible error numbers that may appear in errno.
In the standard library of the C programming language, errno.h is normally stored as a header file. It defines macros for reporting and retrieving error conditions using the symbol errno. errno acts like an integer variable. A value is stored in errno by certain library functions when they detect errors.
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