下列程序的输出结果是
#include <iostream>
using namespace std;
int main ()
char a[] = "Hello,World":
char*ptr = a;
while (*ptr)
if(*ptr>= ’a’ &&*ptr <=’z’
cout<<char*ptr+’A’-’a’);
else cout<<*ptr;
ptr++;
return 0;
A.HELLO. WORLD
B.Hello, World
C.hELLO, wORLD
D.hello, world