A Chegg expert already answered my question, which is was

USING C LANGUAGE!

Write a command line utility that takes any number of words on the command line and prints the words out, sorted according to the character at a certain specified position, which should also be specified via the command line.

If two strings have the same character at the position of interest, their order does not matter.

To solve the problem, you are ONLY allowed to use pointers throughout the program.

You are NOT allowed to use any arrays. In other words, you will not have a single bracket in your program.

/** * A command line utility that takes any number of words on the command * line and prints the words out. The first argument is a character index * by which to sort the words. */ #include  #include  void swap_words(char** words, int index_word_1, int index_word_2); int is_bigger(char* pointer_word_1, char* pointer_word_2, int position); char** sort(int number_words, char** words, int position); int main(int argc, char **argv) { if(argc < 3) { printf("Insufficient arguments "); return -1; } int position = atoi(*(argv+1)); sort(argc-2, argv+2, position); for(int i=2; i 
 
 
 
 
 
 
 
 
and he answered me with this code:
 
#include 
 
#include 
 
 
 
void swap_words(char** word1, char** word2) {
 
char* temp = *word1;
 
*word1 = *word2;
 
*word2 = temp;
 
}
 
 
 
int is_bigger(char* word1, char* word2, int position) {
 
while (*word1 && *word2 && position--) {
 
if (*word1 != *word2) {
 
return *word1 > *word2;
 
}
 
word1++;
 
word2++;
 
}
 
return 0;
 
}
 
 
 
char** sort(int num_words, char** words, int position) {
 
int i, j;
 
for (i = 0; i < num_words - 1; i++) {
 
for (j = 0; j < num_words - i - 1; j++) {
 
if (is_bigger(*(words + j), *(words + j + 1), position)) {
 
swap_words(words + j, words + j + 1);
 
}
 
}
 
}
 
return words;
 
}
 
 
 
int main(int argc, char** argv) {
 
if (argc < 3) {
 
printf("Insufficient arguments ");
 
return -1;
 
}
 
int position = atoi(argv[1]);
 
char** sorted_words = sort(argc - 2, argv + 2, position);
 
for (int i = 0; i < argc - 2; i++) {
 
printf("%s ", *(sorted_words + i));
 
}
 
return 0;
 
}
 
 
 
so please use the code the chegg expert gave us and show images of where you put the values: "a b c" in the code which will then result in getting us "c b a"