its a compilation error..

yeah compilation error...
gives an error "lvalue required in main "

if x=a+++++b ;
it will not give any error......
as a++ is preincremented value and ++b will be post increamented value......
suppose a=3;b=5;
then x will be 3+6=9....

statement is invalid

hey, lav
x= a+++++b; It gives an error (Lvalue required in function main)
but
x= a++ + ++b; it works

example

#include
#include

int main()
{
int x,a=10,b=22;
clrscr();
x=a++ + ++b;
/* x=a+++++b; It gives error*/
printf("x=%d",x);
getch();
}
output:
x=33

(a++) + (++b)
the var' a is post incremented and b is preincremented

a++ is the post increment and ++b is the pre increment and hence the result will be 9...

Is evaluated as (a++) + (++b).
U can verify it using "Let us c" by "Yashwanth Kaneethkar"