01In C, what is the 'Null Terminator' used for in strings?
02What happens if you try to access 'arr[10]' in an array declared as 'int arr[10]'?
03Which function is used to securely copy a string by limiting the number of characters copied?
04How are 2D arrays (e.g., matrix[row][col]) stored in memory in C?
05What is the difference between 'char arr[] = "hi"' and 'char *p = "hi"'?