【C++】函数
By
e2hang
at 2025-05-05 • 0人收藏 • 42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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