if语句与switch语句 — 计算机选择题
题目
阅读以下 C++ 代码，程序输出是什么？
int level = 2, fee = 0;
if (level == 1)
fee = 10;
else
fee = 20;
switch (level) {
case 1: cout << fee << "A"; break;
case 2: cout << fee << "B"; break;
default: cout << fee << "C";
}
A. 10A B. 20A C. 20B D. 20C