已定义字符串 char s[100]; 下列选项中能正确接收并输出“I love CPP”的是（ ）

cin >> s;
cout << s << endl;

cin.getline(s, 100);
cout << s << endl;

for (int i = 0; i < 100; i++) { cin >> s[i]; if (s[i] == '\0') break; }
cout << s << endl;

int j = 0;
while(cin >> s[j]) {
    if (j >= 100 || s[j] == '\0') break;
    j++;
}
cout << s << endl;