Main function
class geek { public static int Main ( ) { gfg g = new gfg ( ) ; int a = - 10 ; int b = 15 ; int x = a ; Console . WriteLine ( " x ▁ is ▁ : ▁ { 0 } " , x ) ; g . alternate ( ref a , ref b , ref x ) ; Console . WriteLine ( " After ▁ change ▁ " ) ; Console . WriteLine ( " x ▁ is ▁ : ▁ { 0 } " , x ) ; return 0 ; } }