Answer / mannucse

with the help of 2way mechine instuctions,its possible
ex:
strcat(s1,s2)
means s1=s1+s2,
or else
a+=b means a=a+b.

Answer / ruchi

#include<stdio.h>
#include<conio.h>
int main()
{
int x=10,y=15;
x = x+y;
printf("%d",x);
getch();
}

Answer / sujith

I am afraid i understood the question. If the question is
defined like, u need to exchange two variables without using
a temporary variable is,

a += b;
b = a - b;
a = a - b;
Another methos is ,
a ^= b ^= a ^= b;

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