No let us post new one which the same example of geeksforgeeks

One of my senior too said that question is not UB As per him g : stores base address g[6] = *(g+6) it is 'o' 111 g[8]= 103 Expression is base address + 8 so answer is 1.. What should i consider?

If I am wrong I will accept for sure

You didn't agree to the other example being UB as well!!

Bcz in that example we have not accessed the address

I am new in C programming Currently on Pointers.. Can anybody please explain how below program output is geeks main( ) { char g[ ] = "geeksforgeeks"; printf("%s", g + g[6] - g[8]); }

So, to my conclusion.... In this type of question i should start solving from right to left as there (g + g[6] - g[8] ) is no grouping .. If grouped as ((g + g[6] ) - g[8] ) then it is UB as it start pointingto g + 111 address If grouped like (g + (g[6] - g[8] )); then it is valid Right????

please sand link of c# drage and drop software

One more doubt i have... Question : predict output #include<string.h> #include<stdio.h> int main() { char a = 30, b = 5; char *p = &a, *q = &b; printf("%d", p - q); } a) 1 b) Run time error c) Compile Time error d) Garbage value Answer : a Explanation given was difference between any two variables of same data type are always one But i think explanation given is wrong as, as per my understanding pointer substraction gives how many such type data can be stored within those addresses.. Is it always one or my understanding is correct?

One more doubt i have... Question : predict output #include<string.h> #include<stdio.h> int main() { char a = 30, b = 5; char *p = &a, *q = &b; printf("%d", p - q); } a) 1 b) Run time error c) Compile Time error d) Garbage value Answer : a Explanation given was difference between any two variables of same data type are always one But i think explanation given is wrong as, as per my understanding pointer substraction gives how many such type data can be stored within those addresses.. Is it always one or my understanding is correct?

Afair it's not guaranteed that individual stack variables will be next to each other

One more doubt i have... Question : predict output #include<string.h> #include<stdio.h> int main() { char a = 30, b = 5; char *p = &a, *q = &b; printf("%d", p - q); } a) 1 b) Run time error c) Compile Time error d) Garbage value Answer : a Explanation given was difference between any two variables of same data type are always one But i think explanation given is wrong as, as per my understanding pointer substraction gives how many such type data can be stored within those addresses.. Is it always one or my understanding is correct?

Doing things on pointers like comparing their value is undefined behavior

@lightness_races_in_orbit do you see any UB here?

I m not getting where the standard says intermediate calculation values can't go out of bound

No, because && operator is called short-circuit and every time first-if statement will be checked.

One interesting thing that his question has brought out is that even 'o' - 'g' isn't guaranteed to be 8 always

a quick question, if I run a hello world program, is the parent process of this process the init process with pid_t == 1?