1.单选题 (1分)
Which of the following string content is incorrect?
A'abc'
B"12’12"
C"0"
D" "

正确答案： A
 
2.单选题 (1分)
Suppose there are two statements: string s1;char s2[20];, which of the following statement is incorrect?
As1=s1+s2;
Bs1.append(s2);
Cs1=s2;
Ds2=s1;

正确答案： D
 
3.单选题 (1分)
Which of the following statement is correct about delete operation? int* arr = new int[10]; delete arr;
Adelete will fail.
BAn exception may be thrown at time.
Cdelte[] arr; must be used to properly deallocate arr.
DThe compiler will emit a diagnostic error.

正确答案： ……此处隐藏8457个字…… flag
B
&ver  fall_5   5bit  less
C_val  callme  file4name   _sch_code  type_id
D
c_plus_plus  typename   input  pass

正确答案： C
39.单选题 (1分)
The compiler automatically converts operands in the following circumstances except
A
In initializations, the initializer is converted to the type of the variable.
B
In assignments, the right-hand operand is converted to the type of the left-hand.
C
In arithmetic operations, "smaller" type converts to the "larger" one.
DIn relational expressions with operands of mixed types, the automatic conversion stops.

正确答案： D