Swap function in c plus language?

Answer 1

#include<iostream>

void swap(int* x, int* y)

{

int tmp = *x; *x=*y; *y=tmp;

}

int main()

{

int a=2, b=4;

std::cout<<"a="<<a<<", b="<<b<<std::endl;

swap(&a, &b);

std::cout<<"a="<<a<<", b="<<b<<std::endl;

}

Answer 2

void swap(int& a, int& b) {
int temp = a;
a = b;
b = temp;

}