initialising variables
int a = 1 ; int b = 2 ; int c = 3 ; int d = 4 ; cout << " Values ▁ before ▁ swapping ▁ are ▁ : " << endl ; cout << " a ▁ = ▁ " << a << endl ; cout << " b ▁ = ▁ " << b << endl ; cout << " c ▁ = ▁ " << c << endl ; cout << " d ▁ = ▁ " << d << endl << endl ;