01
The semicolon is a separator between C statements, not a part of the statement
(True/False)
Answer: False
Explanation: The semicolon is an essential part of the statement.
02
The curly braces “{” and “}” can only serve as delimiters for function bodies
(True/False)
Answer: False
Explanation:
Uses of curly braces:
Delimiters for functions
Delimiters for compound statements
Definitions of structures, enumerations, unions
Initialization lists, etc.
03
Each line in a C program can only contain one statement
(True/False)
Answer: False
Explanation: Omitted
04
The execution of a C program always starts from the main function and ends at the end of the main function
(True/False)
Answer: True
Explanation: Omitted
05
The execution of a C program always starts from the main function and ends in the last function of the program
(True/False)
Answer: False
Explanation: Omitted
06 (Common Mistake)
++(i+1); is an illegal assignment statement
(True/False)
Answer: True
Explanation: ++ can only operate on variables, not on expressions.
++ is the increment operator, which has two forms: prefix (e.g., ++i) and postfix (e.g., i++).
Operand requirements: The operand of ++ must be a modifiable lvalue, meaning it must be a variable or a writable storage location.
i+1 is an expression whose result is a temporary value (rvalue), which cannot be modified, thus ++(i+1) is illegal.
07
Hyphens cannot appear in user identifiers, but underscores can
(True/False)
Answer: True
Explanation: Omitted
08
Underscores can appear in user identifiers, but cannot be placed at the beginning of the user identifier
(True/False)
Answer: False
Explanation: Omitted
09
In C language, Area and area are different identifiers
(True/False)
Answer: True
Explanation: Omitted
10
In C language, int a=b=0; is a correct definition statement
(True/False)
Answer: False
Explanation: Omitted