计算一个正整数除以3的余数，以下选项正确的是（ ）。
int m;cin >> m;switch (m % 3) { default: cout << "remainder is 1"; break;// 余数是1 default: cout << "remainder is 2"; break;// 余数是2 case 0: cout << "remainder is 0"; break;// 余数是0}
int m;cin >> m;switch m % 3:{ case 0: cout << "remainder is 0"; break; // 余数是0 case 1: cout << "remainder is 1"; break; // 余数是1 default: cout << "remainder is 2"; // 余数是2}
int m;cin >> m;switch (m % 3) { default: cout << "remainder is 2"; break; // 余数是2 case 0: cout << "remainder is 0"; break; // 余数是0 case 1: cout << "remainder is 1"; break; // 余数是1}
int n = 1;int m;cin >> m;switch (m % 3) { case 0: cout << "remainder is 0"; break; // 余数是0 case n: cout << "remainder is 1"; break; // 余数是1 default: cout << "remainder is 2"; // 余数是2}