Matematyka.pl

Kod: Zaznacz cały

#include "stdafx.h"
#include <iostream>

using namespace std;

template <class Type>
void swap(Type& firstVariable, Type& secondVariable)
{
	Type temp;
	temp = firstVariable;
	firstVariable = secondVariable;
	secondVariable = temp;
}

int main()
{
    int a,b;

	a=2;
	b=3;

    swap(a,b);

	cout<<b;
	cout<<a;

	cout<<endl;
	system("PAUSE");
	return 0;
}

Kod: Zaznacz cały

http://www.cplusplus.com/reference/algorithm/swap/

Kod: Zaznacz cały

#include <cstdio>
#include <cstdlib>

template <typename T> void change(T& a, T& b){
	for(int i=0;i<sizeof(T);i+=4){
		int* c = reinterpret_cast<int*>(&a) + i/4;
		int* d = reinterpret_cast<int*>(&b) + i/4;
		*c ^= *d;
		*d ^= *c;
		*c ^= *d;
	}
}

class Test1{
public:
	int x;
	double z;
	Test1(int X, double Z) : x(X), z(Z) {}
};

class Test2{
public:
	int* tab;
	int val;
	int size;
	Test2(int Size, int Val) : size(Size), val(Val){
		tab = new int[size];
		for(int i=0;i<size;++i){
			tab[i] = val;
		}
	}
	~Test2(){
		delete[] tab;
	}
	void print(){
		for(int i=0;i<size;++i){
			printf("%d ",tab[i]);
		}
	}
};

int main(){
	int a = 5;
	int b = 8;
	change(a,b);
	printf("%d %d
", a, b);
	double c = 3.14;
	double d = 5.24;
	change(c,d);
	printf("%lf %lf
",c,d);
	Test1 e(5,23.0);
	Test1 f(7,14.0);
	change(e,f);
	printf("%d %lf %d %lf
",e.x,e.z,f.x,f.z);
	Test2 g(3,35);
	Test2 h(4,1);
	change(g,h);
	g.print();
	h.print();
	return EXIT_SUCCESS;
}