what should strlen() really return in this code?

Question

#include 
#include 
#include 
int main(void)
{
    char qq[] = {\'a\' , \'b\' , \'c\' , \'d\'};
    char qqq[] = \"abcd\";         


        

Answer 1

Your string is not null-terminated. That means your code is not deterministic. strlen() will terminate whenever it encounters a \0 (null byte/character); the result can vary due to it sequential scanning until the \0 is encountered.