#include<br>void fun(char *c)<br>{ while(*c)<br>{ if(*c>='a'&&*c<='z') *c=*c-('a'-'A');<br>c++;<br>}<br>}<br>main()<br>{ char s[81];<br>gets(s); fun(s); puts(s):<br>}<br>当执行程序时从键盘上输入Hello Beijing<回车>,则程序的输出结果是
A. hello beijing
B. Hello Beijing
C. HELLO BEIJING
D. hELLO Beijing