c++ 模板

模板函数
模板函数例子如下：

[cpp]
#include

template
const T& min(const T& a, const T& b) {
return a < b a : b;
}

int main()
{
int x = 10, y = 20;
long xLong = 100, yLong = 200;
int minimum = min(x, y);
long minimumLong = min(xLong,yLong);
std::cout << "minimum = " << minimum << std::endl;
std::cout << "minimumLong = " << minimumLong << std::endl;
}

模板函数也能向普通函数一样声明为inline的,需要特殊说明的是其需要注意inline关键字的位置,不能将关键字放到template的前面如下所示：

template

inline const T& min(const T& a,const T& b) {

但不能这样：

inline template

const T& min(const T& a, constT& b) {

模板类
模板类的示例代码如下：

[cpp]
template
class Complx {
private:
T real, imag;
public:
Complx(T&, T&);
T& getReal();
T& getImag();
};

template
Complx::Complx(T& a, T& b) {
real = a;
imag = b;
}

template
T& Complx::getReal() {
return real;
}

template
T& Complx::getImag() {
return imag;
}

#include

int main()
{
double i=100, j=200;
Complx myComplx(i,j);

std::cout <<"My complex is " << myComplx.getReal() << ","
<< myComplx.getImag() << std::endl;
}