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