Answer / learning

x=x-a;
a=x+a;
x=a-x;

x=x-p;
p=x+p;
x=p-x;

Answer / gurusaran

x=x*a; (x=1200)
a=x/a; (a=60)
x=x/a; (x=20)

p=p*x; (p=40)
x=p/x; (x=2)
p=p/x; (p=20)

Hence final values are a=60,x=2,p=20

Answer / padmas

To swap the values without using temporary variable
for a,x and p,
Do a call to swap function for a and p and
another call to same swap function for x and p.
call1:swap(a,p);
call2:swap(x,p);
swap(variable1,variable2)
{no temporary variable}

Answer / chaitanya

x=x^a;
a=x^a;
x=a^x;

x=x^p;
p=x^p;
x=p^x;

Answer / padmas

If the values for a=20,x=60, and p=2 then
need another set of values for b=,y= and q= to do the swap
without using temporary variable.

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