以下程序的功能是根据输入的y(Y)与n(N),在屏幕上分别显示出This is YES. 与This is NO. 。请填空。 #include
void YesNo(char ch) { switch(ch) {case'y': case'Y':printf("\nThis is YES.\n");【2】; case'n': case'N':printf("\nThis is NO.\n"); } } int main() { char ch; printf("\nEnter a char'y','Y'or'n','N':"); ch=【2】; printf("ch:%c",ch); YesNo(ch); return(0); }