题目内容

There are the following procedures, where the initial value of k is an octal number. int main(void) { int k=011; printf("%d\n",k++); return 0; } The output of the program after running is ( ).

A. 12
B. 11
C. 10
D. 9

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Defined as: int k = 0;, the expression that has different value from the other three expressions is ( )

A. k++
B. k+=1
C. ++k
D. k+1

Let all variables have been correctly defined. To assign values 10 and 20 to variables a1 and a2, and to assign characters X and Y to variables c1 and c2, use scanf ("%d%c%d%c", &a1, &c1, &a2, &c2); statement. The correct input form shown below is ( ). (Note:□ stands for space character)

A. 10□X□20□Y
B. 10□X20□Y
C. 10□X20□Y
D. 10X20Y

In C, the operator that requires operands to be integers is ( )

A. /
B. ++
C. *=
D. %

ch is defined as a character type variable. The error in the following assignment statement is ( ).

A. ch=‘\’;
B. ch=62+3;
C. ch=NULL;
D. ch=‘\xaa’;