give me program coding for this prog plz

how can i interchang any 2 numbers????
with out taking any variable?????
plz ans me its urjent

 

One way is to use the xor operation, although it doesn't always work:

Code:

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

You should find out under what circumstances it doesn't work (by testing that is, not by posting "give me coding plz" somewhere).

 

Yet another way is
a = a + b;
b = a - b;
a = a - b;