try this.

What will be the output if you will execute following c code?

#include<stdio.h>
int main(){
int xyz=1000;
int *ptr=&xyz;
printf("%d %d",++xyz,(*(int *)xyz)--);
return 0;
}

 

most probably the answer is 1000 1000

 

The answer is totally right but will u clarify the answer?

 

printf function follows cedecl parameter passing convention. That is parameter will pass from right to left direction.
(*(int *)ptr)—-
= (*&val)—
= val—-
Here –- post decrement operator. So first it will assign its value i.e. printf function will print 1234 and value of variable val will decrement by one. So
val = 1233
Now second parameter will pass:
++val
So, val = 1234