类中静态成员的使用

#include "stdio.h"

template
class A
{
public:
    static int i;
};

template
int A ::i = 10;

void main()
{
    A a1;
    A a2;
    A a3;
    A a4;

A ::i = 0x10;
A ::i = 0x20;
A ::i = 0x30;
A ::i = 0x40;

printf("A1::i[0x%x], Value[0x%x]\n", &(A ::i), A ::i);
printf("A2::i[0x%x], Value[0x%x]\n", &(A ::i), A ::i);
printf("A3::i[0x%x], Value[0x%x]\n", &(A ::i), A ::i);
printf("A4::i[0x%x], Value[0x%x]\n", &(A ::i), A ::i);
}

输出：
A1::i[0x417060], Value[0x10]
A2::i[0x41704c], Value[0x20]
A3::i[0x417034], Value[0x30]
A4::i[0x417030], Value[0x40]