【C++】函数
By
e2hang
at 2025-05-05 • 0人收藏 • 113人看过
#include <iostream>
#define S(x) x*x
using namespace std;
typedef int num;
template <typename x , class y>
const y test(const x a, const y arr[]){
y sum;
for(int i = 0; i < a; i++){
sum+=arr[i];
}
return sum;
}
int arrange(int n=1){
return n;
}
inline double set(double arr[]){
return arr[0];
}
//transform &
void swap_1(int& a,double& b){
int temp;
temp = b;
b = a;
a = temp;
}
//transform *
void swap_2(int *a, double* b){
int temp;
temp = * a;
* a = * b;
* b = temp;
//func equals int *a = p1
}
int main(){
int k;
cin >> k;
double* p = new double [k];
for(int i = 0; i < k; i++){
cin >> p[i];
}
auto s = test(k,p);
cout << "#define test : S(5)" << S(5) <<endl;
cout << "Template function test : " << s << endl;
cout << "Inline function test : " << set(p) << endl;
cout << "Before SWAP : " << k <<" " << p[0];
cout << endl;
swap_2(&k , &p[0]);
cout << "After SWAP : " << k <<" " << p[0] << endl;
cout << arrange() <<endl;
return 0;
}运行结果:
输入:
5
1 1 1 1 1
输出:
#define test : S(5)25
Template function test : 5
Inline function test : 1
Before SWAP : 5 1
After SWAP : 1 5
1
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