41 lines
587 B
C++
41 lines
587 B
C++
#include <iostream>
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
|
|
using namespace std;
|
|
|
|
template <typename T>
|
|
T &maxVal(T &a, T &b)
|
|
{
|
|
return a > b ? a : b;
|
|
}
|
|
|
|
class A
|
|
{
|
|
private:
|
|
int x;
|
|
|
|
public:
|
|
A(int x) : x(x) {}
|
|
void show()
|
|
{
|
|
cout << "x = " << x << endl;
|
|
}
|
|
|
|
public:
|
|
// 重载运算符>，解决函数模版的局限性，不用具体化函数模版
|
|
bool operator>(const A &a) const
|
|
{
|
|
return this->x > a.x;
|
|
}
|
|
};
|
|
|
|
int main()
|
|
{
|
|
A a1(20), a2(50);
|
|
// A &b = maxVal<A>(a1, a2);
|
|
A &b = maxVal(a1, a2);
|
|
b.show();
|
|
return 0;
|
|
}
|