Swapping of two numbers using functions

Answer 1

Using function in C, I do not know yet.

Without using 3rd var

a=2 b=3

a+=b
b=a-b
a=a-b

Answer 2

>> Using pointers

swap(int *a, int *b) {
int temp = *a;
*a = *b;
*b = *a;
}

int main() {
int a, b;
cin>>a>>b;
swap(&a,&b);
return 0;
}

Or use XOR operator.

a = a ^ b;
b = a ^ b;
a = a ^ b;

Answer 3

swapping without using third variable by returning values in c#
function swap(x, y)
{
x, y=y, x
return x, y
}

or in c++
without returning values
void swap(int a, int b)
{
int temp;
temp=a;
a=b;
b=temp;
cout<<a;
cout<<b;
}

Answer 4

Void main()
{ clrscr ();
int a, b,temp;
cin>>a>>b;
temp=a;
a=b;
b=temp;
Cout<<a<<b;
getch();
}

Answer 5

Thanks my frinds

Answer 6

In java

public void main (int a, int b){
int temp;
temp = x; 
      x = y; 
      y = temp; 
}

Answer 7

function swap (a,b){
a,b = b,a
Return a,b
}