—May I take photos in the museum?

—No, you        . You       obey the rules here.

A．may not; can

B．mustn’t; may

C．can’t; can

D．mustn’t; must

阅读下列程序，当运行程序时，输入asd af aa z67，则输出为( )。 #include ＜sldio.h＞ int fun (char *str) { int i,j=0;for(i=0;str[i]! =’\0’;i++) if(str[i]! =") str[j++]=str[i];str[j]=’\0’; } main() { char str[81];int n;printf("Input a string:");gets(str);fun(str);printf("%s\n",str); }

A．asdafaaz67

B．asd af aa z67

C．asd

D．z67