how can this function swap value of x to y or y to x

[xxgixxx]

Question is the title

void badswap (int x , int y)
{
   int temp = x;
   x=y;
   y=temp;
}

[SECMoG1T]

That is what will happens when you call it in a program

[Ispil]

You want them to be passed by reference, not by value.

http://www.learncpp.com/cpp-tutorial/73-passing-arguments-by-reference/