求三色彩球的颜色。有数量无限的红(Red)绿(Green)蓝(Blue)三种彩球排成一行，每组先为5个红色球，随后3 个绿色，最后为2个蓝色。每个球都有编号，从左到右依次为1,2,3……。输入整数代表编号，求该编号球的颜色。下 面是C++代码是实现，正确说法是( )。
int N, remainder; cin >> N; remainder = N % 10; // remainder变量保存余数 if((1 <= remainder) && (remainder<= 5)) cout << "Red"; else if ((6 <= remainder) && (remainder <= 8)) cout << "Green"; else if ((remainder == 9) || (remainder == 0)) cout << "Blue";
- A. 将 else if ((remainder == 9) || (remainder == 0)) 修改为 else 效果相同
- B. 将 ((1 <= remainder) && (remainder<= 5)) 修改为 (remainder <= 5) 效果相同
- C. else if ((6 <= remainder) && (remainder <= 8)) 写法错误，应修改为 else if (6 <= remainder <= 8)
- D. 根据题意 remainder = N % 10 应修改为 remainder = N / 10
正确答案：A