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( )。
1 int N, remainder; 2 cin >> N; 3 remainder = N % 10; // remainder变量保存余数 4 5 if((1 <= remainder) && (remainder<= 5)) 6 cout << "Red"; 7 else if ((6 <= remainder) && (remainder <= 8)) 8 cout << "Green"; 9 else if ((remainder == 9) || (remainder == 0)) 10 cout << "Blue";
将else if((remainder==9)||(remainder==0))修改为else效果相同
将((1<=remainder)&&(remainder<=5))修改为(remainder<=5)效果相同
else if((6<=remainder)&&(remainder<=8))写法错误，应修改为else if(6<=remainder<=8)
根据题意remainder=N%10应修改为remainder=N/10
