Jin questions

• How does the operating system recognize end of a text file?
• What is pointer to object type in C?
• Confusion about sizeof operator in C
• Is there a reason why an array name is not an lvalue?
• Confusion about dereference operator ("*") in C
• What does 'stream' mean in C?
• What is the difference between execution and evaluation?
• What's the point of evaluating left operand of assignment operator in C?
• What is the type of command-line argument `argv` in C?
• Why isn't this pointer arithmetic allowed in C? [duplicate]

Jin answers