Update 6 files

- /worksheet0/.gitkeep
- /worksheet0/foo.txt
- /worksheet0/task1_pointer
- /worksheet0/task1_pointer.c
- /worksheet0/task1_pointer.dSYM.zip
- /worksheet1/.gitkeep

worksheet0/foo.txt

-10
-20
-30
-40
-54

worksheet0/task1_pointer.c

-#include <stdio.h>
-
-int main() {
-    int n = 10;
-    int *ptr_to_n = &n;
-
-    // Increment the value of n using the pointer
-    (*ptr_to_n)++;
-    printf("Value of n after increment: %d\n", n);
-
-    return 0;
-}