运行下面程序时,从键盘输入字母H,则输出结果是___#include void main( ){ char ch;ch=getchar( );switch(ch){ case 'H':printf("Hello!\n");case 'G':printf("Good morning!\n");default:printf("Bye_Bye!\n");}}
A. Hello!Good Morning!Bye_Bye!
B. Hello!
C. Hello!Good Morning!
D. Good Morning!