I'm new to C language so plz sum1 help me out. A C code written
int i=3;
printf("%d",++i + ++i);
Complier gvs O/P =9. How?
Thanx in advance
I'm new to C language so plz sum1 help me out. A C code written
int i=3;
printf("%d",++i + ++i);
Complier gvs O/P =9. How?
Thanx in advance
The results are undefined. You're modifying a variable more than once in an expression (or sequence point to be more accurate).
Modifying a variable more than once between sequence points is undefined, so don't do it.
It might be your compiler, for this particular case decides to evalate
++i + ++i
as
++i
, yielding 4, leaving i to be 4++i
, yielding 5, leaving i to be 5 (as the prior step left i as 4, incrementing it to 5)Another compiler, or if you alter the optimization level, or if you change the code slightly, might produce different output.