No out of bounds error

Question

I have this code in C which takes in bunch of chars

#include 
# define NEWLINE \'\\n\'
int main()
{

char c;
char str[6];
int i =         


        

Answer 1

Memory allocation is more complicated than it seems. The variable "str," in this case, is on the stack, next to other variables, so it's not followed by unallocated memory. Memory is also usually word-aligned (one "word" is four to eight bytes.) You were possibly messing with the value for another variable, or with some "padding" (empty space added to maintain word alignment,) or something else entirely.

Like R.. said, it's undefined behavior. Out-of-bounds conditions could cause a segfault... or they could cause silent memory corruption. If you're modifying memory which has already been allocated, this will not be caught by the operating system. That's why out-of-bounds errors are so insidious in C.