The programing language is C

/*Code starts here

NOTE: You should NOT use array notation inside your functions. Use only * pointer notation for any code that you write. * */

#include #include // NO additional imports allowed. You *can* make helper functions if you wish.

#define MAX_STRING_LEN 1024

char *find_last_substring(char *str, char *a) { /* * Given a string `str` and another string `a`, return a pointer to the start * of the *LAST* occurrence of `a` in `str`. * * For instance, if we had: (here) * V * char str[MAX_STRING_LEN] = "Hello everyone, Hello world!" * char *res = find_last_substring(str, "Hello"); * * then, we would except `res` to be a pointer to the character marked above. * In particular, since the second "Hello" is at index 16, we should get * the following: * * res - str == 16; (This is pointer arithmetic) * * If `a` is not a valid substring of `str`. return NULL. */

return NULL; // Replace with correct return }

void split_vowels(char *str, char *vowels) { /* * Move all of the vowels from `str` (in the order of appearance) to the * string `vowels`. (ie, after the function call `str` should not have any * vowels in it). You may assume there is enough space allocated in `vowels`. * * Look at the test case below for an example. */

return; // Not returning anything. `str` and `vowels` modified directly. }

// ----------------------------------------------------------------------------

// Do not change the lines above and below the main function. You are free to change anything // inside the main() function itself. #ifndef __testing__ int main() { char my_str[MAX_STRING_LEN] = "many many people have many many hobbies"; char *res = find_last_substring(my_str, "many"); if (res - my_str == 27) { printf("- find_last_substring() returned the correct result! "); } else { printf("! find_last_substring() did not work properly. "); }

printf("---------------------------------------------------------------- ");

char str[MAX_STRING_LEN] = "This sentence has many vowels! AEIOU"; char vowels[MAX_STRING_LEN]; split_vowels(str, vowels);

printf("(Expected Result) str: \"Ths sntnc hs mny vwls! \", " "vowels: \"ieeeaaoeAEIOU\" "); printf("(Your Solution) str: \"%s\", vowels: \"%s\" ", str, vowels); } #endif

You don't have to do anything for the main function I just kept it here to help with testing.

Thanks for the help :)