6.正確的C語言字符常量是(      )

A.‘\\’                                                    B.‘65’

C.“A”                                                        D.‘／n’

7.設(shè)char s[ ]=“1234567”；，執(zhí)行printf(“％d，％d＼n”，strlen(s)，sizeof(s))；后的輸出結(jié)果是(      )

A.7，7                                                      B.7，8

C.8,7                                                         D.8，8

8.設(shè)int a[ ]={12，34，56，78}，*p=a；，下列表達式的值為56的是(      )

A.p[1+2]                                                   B.*(a+2)

C.a[3]                                                       D.*(p+3)

9.對二維數(shù)組正確定義并初始化的是(      )

A.int a[ ][3]={1，2，3，4，5，6>；          B.int a[3][3]=(1，2,3，4，5，6)；

C.int a[3][ ]={{l，2，3>，{4,5,6}}；         D.int a[3][3]={a,b，c，d，e，f，g}；

10.設(shè)double x=5.168；，執(zhí)行printf(“％5.3f\n”，(int)(x*10+0.5)／10.0)；后的輸出結(jié)果是(      )

A.5.218                                                     B.5.210

C.5.200                                                     D.5.168