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#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//#include "list.h"
int main(int argc, char* argv[]) {
	list_t* list = list_create();
	for(int i = 0; i < 5; i++)
		list_append(list, i);
	for(int i = -1; i > -5; i--)
		list_prepend(list, i);
	printf("Array: ");
	list_print(list);
	int index = 2;
	element_t* el_1 = list_index(list, index);
	if(el_1 == NULL) {
		printf("FAIL index %d is not in array\n", index);
		return 1; 
	}
	printf("value at index %d is %d\n", index, el_1->val);
	printf("Next Task\n");
	printf("Testing tasks 2 to 6\n");
	if(el_1->val != -2) 
		return 1;
 
 
 
 
	//Task 2
	printf("Testing Task 2\n");
	element_t* el_2 = element_create(9);
	if(el_2->val != 9) {
		printf("el_2->val is supposed to be 9 but isn't\n");
		return 1;
	}
 
	if(el_2 == NULL) {
		printf("MEM ALLOC FAIL");
		return 1;
	}
 
	element_t* el_3 = element_create(99);
	list_t* list_2 = list_create();
	for(int i = 0; i < 5; i++)
		list_append( list_2, i);
	for(int i = -1; i > -5; i--)
		list_prepend(list_2, i);
	if (list->tail->val != 4){
		printf("TAIL ERROR\n");
		return 1;
	}
 
	el_3->next = list_index(list_2, 3);
	free(el_3->next);
	el_3 = element_create(100);
	if(el_3->next != NULL){
		printf("el_3->next is supposed to be NULL but isn't\n");
		return 1;
	}
	printf("Task 2 Passed\n");
 
 
 
 
	//Task 3
	printf("Testing Task 3\n");
	list_t* list_3 = list_create();
	element_t* el_4 = list_index(list_3, 5);
	if(el_4 != NULL) {
		printf("el_4 is supposed to be NULL but isn't\n");
		return 1;
	}
	printf("Task 3 Passed\n");
 
 
 
 
	//Task 4
	printf("Testing Task 4\n");
	list_t* list_4 = list_create();
	list_prepend(list_4, 800);
	if(list_4->tail->val != 800) {
		printf("list_4->tail is supposed to be 800 but isn't\n");
		return 1;
	}
	printf("Task 4 Passed\n");
 
 
 
 
	//Task 5
	printf("testing list_create(t5)...\n");
	list_t* list_5 = list_create();
	list_5->head = element_create(666);
	list_5->head->next = element_create(333);
	list_5->tail = list_5->head->next;
	free(list_5);
	list_5 = list_create();
 
	if(list_5->tail != NULL) {
		printf("list_5->head is supposed to be NULL\n but isn't");
		return 1;
	}
	printf("Task 5 Passed\n");
 
 
	//Task 6
	printf("Testing Task 6\n");
	list_t* list_6 = list_create();
	list_print(list_6);
	printf("Task 6 Passed\n");
 
	//get rid of arrays
	list_destroy(list);
	list_destroy(list_2);
	list_destroy(list_3);
	list_destroy(list_4);
	list_destroy(list_5);
	list_destroy(list_6);
 
	printf("Tasks 2 to 6 have all passed\n");
	return 0; 
}
 
 

prog.c: In function 'main':
prog.c:7:2: error: unknown type name 'list_t'
  list_t* list = list_create();
  ^
prog.c:7:17: warning: implicit declaration of function 'list_create' [-Wimplicit-function-declaration]
  list_t* list = list_create();
                 ^
prog.c:7:17: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
prog.c:9:3: warning: implicit declaration of function 'list_append' [-Wimplicit-function-declaration]
   list_append(list, i);
   ^
prog.c:11:3: warning: implicit declaration of function 'list_prepend' [-Wimplicit-function-declaration]
   list_prepend(list, i);
   ^
prog.c:13:2: warning: implicit declaration of function 'list_print' [-Wimplicit-function-declaration]
  list_print(list);
  ^
prog.c:15:2: error: unknown type name 'element_t'
  element_t* el_1 = list_index(list, index);
  ^
prog.c:15:20: warning: implicit declaration of function 'list_index' [-Wimplicit-function-declaration]
  element_t* el_1 = list_index(list, index);
                    ^
prog.c:15:20: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
prog.c:20:49: error: request for member 'val' in something not a structure or union
  printf("value at index %d is %d\n", index, el_1->val);
                                                 ^
prog.c:23:9: error: request for member 'val' in something not a structure or union
  if(el_1->val != -2) 
         ^
prog.c:31:2: error: unknown type name 'element_t'
  element_t* el_2 = element_create(9);
  ^
prog.c:31:20: warning: implicit declaration of function 'element_create' [-Wimplicit-function-declaration]
  element_t* el_2 = element_create(9);
                    ^
prog.c:31:20: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
prog.c:32:9: error: request for member 'val' in something not a structure or union
  if(el_2->val != 9) {
         ^
prog.c:42:2: error: unknown type name 'element_t'
  element_t* el_3 = element_create(99);
  ^
prog.c:42:20: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  element_t* el_3 = element_create(99);
                    ^
prog.c:43:2: error: unknown type name 'list_t'
  list_t* list_2 = list_create();
  ^
prog.c:43:19: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  list_t* list_2 = list_create();
                   ^
prog.c:48:10: error: request for member 'tail' in something not a structure or union
  if (list->tail->val != 4){
          ^
prog.c:53:6: error: request for member 'next' in something not a structure or union
  el_3->next = list_index(list_2, 3);
      ^
prog.c:54:11: error: request for member 'next' in something not a structure or union
  free(el_3->next);
           ^
prog.c:55:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  el_3 = element_create(100);
       ^
prog.c:56:9: error: request for member 'next' in something not a structure or union
  if(el_3->next != NULL){
         ^
prog.c:67:2: error: unknown type name 'list_t'
  list_t* list_3 = list_create();
  ^
prog.c:67:19: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  list_t* list_3 = list_create();
                   ^
prog.c:68:2: error: unknown type name 'element_t'
  element_t* el_4 = list_index(list_3, 5);
  ^
prog.c:68:20: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  element_t* el_4 = list_index(list_3, 5);
                    ^
prog.c:80:2: error: unknown type name 'list_t'
  list_t* list_4 = list_create();
  ^
prog.c:80:19: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  list_t* list_4 = list_create();
                   ^
prog.c:82:11: error: request for member 'tail' in something not a structure or union
  if(list_4->tail->val != 800) {
           ^
prog.c:93:2: error: unknown type name 'list_t'
  list_t* list_5 = list_create();
  ^
prog.c:93:19: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  list_t* list_5 = list_create();
                   ^
prog.c:94:8: error: request for member 'head' in something not a structure or union
  list_5->head = element_create(666);
        ^
prog.c:95:8: error: request for member 'head' in something not a structure or union
  list_5->head->next = element_create(333);
        ^
prog.c:96:8: error: request for member 'tail' in something not a structure or union
  list_5->tail = list_5->head->next;
        ^
prog.c:96:23: error: request for member 'head' in something not a structure or union
  list_5->tail = list_5->head->next;
                       ^
prog.c:98:9: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
  list_5 = list_create();
         ^
prog.c:100:11: error: request for member 'tail' in something not a structure or union
  if(list_5->tail != NULL) {
           ^
prog.c:109:2: error: unknown type name 'list_t'
  list_t* list_6 = list_create();
  ^
prog.c:109:19: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
  list_t* list_6 = list_create();
                   ^
prog.c:114:2: warning: implicit declaration of function 'list_destroy' [-Wimplicit-function-declaration]
  list_destroy(list);
  ^

Standard output is empty