【C++】模板函式及模板類
阿新 • • 發佈:2019-02-20
常用模板類的情況
#include<iostream>
using namespace std;
//模板函式,一個模板引數
template<typename T>
T fun1(T a,T b){
if(a>b)
{
return a;
}
else{
return b;
}
}
//模板函式,兩個模板引數
template<typename T1,typename T2>
void fun2(T1 a,T2 &b)
{
b=a+b;
}
//模板函式,使用選擇排序
template<typename T>
void fun4(T arr[],int n){
for(int i = 1;i < n;i++){
int temp = arr[i];
int j = i - 1;
while(temp < arr[j]){
arr[j+1] = arr[j];
j--;
if(j == -1){
break;
}
}
arr[j+1] = temp;
}
}
//模板類,兩個模板引數
template<typename T1,typename T2>
class myClass{
private:
T1 a;
T2 b;
public:
myClass(T1 aa){
a=aa;
}
T2 fun3(){
return a;
}
};
int main(){
int a=7,b=8;
cout <<"result of fun1:"<<endl;
cout << fun1(a,b)<<endl;
cout<<"result of fun2:"<<endl;
fun2(a,b);
cout<<b<<endl;
cout<<"template class is:"<<endl;
myClass<int ,int > ss(a);
cout <<ss.fun3()<<endl;
cout<<"模板函式選擇排序"<<endl;
int arr[10]={6,3,4,2,7,11,3,55,42,17};
fun4(arr,10);
for (int i=0;i<10;i++){
cout<<arr[i]<<" ";
}
cout<<endl;
return 0;
}