以下程序的执行结果为( )。
#include ＜iostream.h＞
class Sample

int n;
public:
Sample(int i) n=i;
operator++() n++;//前缀重载运算符
operator++(int) n+=2; //后缀重载运算符
void disp()

cout＜＜"n="＜＜n＜＜endl;

;
void main()

Sample A(2),B(2);
A++;
++B;

A．disp();A．disp();
A．n=4

B．n=1

C．n=3

D．n=5
n=3n=2n=4n=6

利息的含义、影响因素、计算公式

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