[C++程序设计]函数模板
定义函数模板的一般形 式为
template < typename T> 或 template <class T>
函数模板: 函数参数个数,函数体相同.参数类型不同
函数重载: 函数参数个数,类型不同.与函数类型(返回值)无关
1 #include <iostream> 2 using namespace std; 3 4 template<typename T> 5 T max(T a, T b, T c) 6 { 7 if(b > a) a = b; 8 if(c > a) a = c; 9 return a; 10 } 11 12 int main() 13 { 14 int x, y, z, m; 15 cout << "please enter three integer numbers:" << endl; 16 cin >> x >> y >> z; 17 m = max(x, y ,z); 18 cout << "integer of max is " << m << endl; 19 20 double x1, y1, z1, m1; 21 cout << "please enter three double numbers:" << endl; 22 cin >> x1 >> y1 >> z1; 23 m1 = max(x1, y1 ,z1); 24 cout << "double of max is " << m1 << endl; 25 26 long x2, y2, z2, m2; 27 cout << "please enter three long numbers:" << endl; 28 cin >> x2 >> y2 >> z2; 29 m2 = max(x2, y2 ,z2); 30 cout << "long of max is " << m2 << endl; 31 return 0; 32 }
