Re: i = i++

[Ð ë ê þ ã K <deepak2000@xxxxxxxxxxxx>]

read some C faqs . they say  changing a variable in a statement which refers it twice isn't valid . so 
anything like 
++i = i;  or 
++i = i++;  or 
printf("%d %d",++i,i++);     are not valid & thus may differ from compiler to compiler
_______
deepak

>hi
>what should the outcome of this program be ?
>
>void main()
>{
>    int i = 1 ;
>    i = i++ ;
>    cout<<i ;
>}
>
>i got the oputput as 2. but the following program gave
>me 1
>
>class A
>{
>    int num ;
>    public :
>	A(int n) : num(n) {}
>	A & operator = (const A & rhs)
>	{num = rhs.num ; return *this ;}	
>	A operator ++(int)
>	{A temp(num) ; num = num + 1 ; return temp ;}
>	operator int()
>	{return num ;}
>} ;
>
>void main()
>{
>    A a(1) ;
>    a = a++ ;
>    cout<<a ;
>}
>
>the result is the same on g++ and vc. i dont
>understand. please help.
>sindhoor
>
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