diff --git a/src/SortList/CMakeLists.txt b/src/SortList/CMakeLists.txt
new file mode 100644
index 0000000..490359d
--- /dev/null
+++ b/src/SortList/CMakeLists.txt
@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.10)
+project(SortList)
+
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+
+add_executable(Sort_list sort_list.c list.c)
+
+target_compile_options(Sort_list PRIVATE -Wall -Wextra)
+
+enable_testing()
+add_test(NAME SortListTest COMMAND Sort_list --test)
diff --git a/src/SortList/list.c b/src/SortList/list.c
new file mode 100644
index 0000000..ff8fef4
--- /dev/null
+++ b/src/SortList/list.c
@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include "list.h"
+
+void append(SortList *begin, int value){
+    SortList *NewElem = malloc(sizeof(SortList));
+    SortList  *p = begin;
+    bool flag = 0;
+    NewElem->value = value;
+    while (p->next != NULL){
+	if (p->next->value > value){
+	    NewElem->next = p->next;
+	    p->next = NewElem;
+	    flag = 1;
+	    break;
+	}
+	p = p->next;
+    }
+    if (!flag){
+	NewElem->next = p->next;
+	p->next = NewElem;
+    }
+}
+int get(SortList *begin){
+    if (begin->next != NULL)
+	return begin->next->value;
+    return -1;
+}
+void DelElem(SortList *begin, int value){
+    SortList *p = begin;
+    bool flag  = 0;
+    while (p->next != NULL){
+	if (p->next->value == value){
+	    SortList *elem = p->next;
+	    p->next = elem->next;
+	    flag = 1;
+	    free(elem);
+	    break;
+	}
+	p = p->next;
+    }
+    if (!flag){
+	printf("\n %s", "the item is not in the list");
+    }
+}
+void DelList(SortList *begin){
+    while (begin->next != NULL){
+	SortList *p = begin->next;
+	begin->next = p->next;
+	free(p);
+    }
+}
+void PrintfList(SortList *begin){
+    SortList *p = begin->next;
+    while (p != NULL){
+	printf("%d %c", p->value, ' ');
+	p = p->next;
+    }
+    printf("\n");
+}
diff --git a/src/SortList/list.h b/src/SortList/list.h
new file mode 100644
index 0000000..51ec797
--- /dev/null
+++ b/src/SortList/list.h
@@ -0,0 +1,12 @@
+#include <stdbool.h>
+
+typedef struct SortList{
+    int value;
+    struct SortList *next;
+} SortList;
+
+void append(SortList *begin, int value);
+int get(SortList *begin);
+void DelElem(SortList *begin, int value);
+void DelList(SortList *begin);
+void PrintfList(SortList *begin);
diff --git a/src/SortList/sort_list.c b/src/SortList/sort_list.c
new file mode 100644
index 0000000..ffa7e0d
--- /dev/null
+++ b/src/SortList/sort_list.c
@@ -0,0 +1,119 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <assert.h>
+#include <string.h>
+#include "list.h"
+
+void Test1(){
+    SortList List;
+    List.next = NULL;
+    
+    append(&List, 5);
+    append(&List, 8);
+    append(&List, -4);
+    append(&List, 0);
+    append(&List, 11);
+    append(&List, 9);
+    append(&List, 5);
+    
+    assert(get(&List) == -4);
+    DelElem(&List, -4);
+    assert(get(&List) == 0);
+    DelElem(&List, 0);
+    assert(get(&List) == 5);
+    DelElem(&List, 5);
+    assert(get(&List) == 5);
+    DelElem(&List, 5);
+    assert(get(&List) == 8);
+    DelElem(&List, 8);
+    assert(get(&List) == 9);
+    DelElem(&List, 9);
+    assert(get(&List) == 11);
+    DelElem(&List, 11);
+}
+
+void Test2(){
+    SortList List;
+    List.next = NULL;
+    
+    append(&List, 1);
+    append(&List, 2);
+    append(&List, 3);
+
+    assert(get(&List) == 1);
+    DelElem(&List, 1);
+    assert(get(&List) == 2);
+    DelElem(&List, 2);
+    assert(get(&List) == 3);
+    DelElem(&List, 3);
+}
+
+void Test3(){
+    SortList List;
+    List.next = NULL;
+    
+    append(&List, 3);
+    append(&List, 2);
+    append(&List, 1);
+
+    assert(get(&List) == 1);
+    DelElem(&List, 1);
+    assert(get(&List) == 2);
+    DelElem(&List, 2);
+    assert(get(&List) == 3);
+    DelElem(&List, 3);
+}
+void Test4(){
+    SortList List;
+    List.next = NULL;
+    
+    append(&List, 3);
+    append(&List, 2);
+    append(&List, 1);
+    
+    DelList(&List);
+    assert(List.next == NULL);
+}
+void run(){
+    Test1();
+    Test2();
+    Test3();
+    Test4();
+    printf("%s \n", "all tests have been completed successfully");
+}
+int main(int argc, char *argv[]){
+    if (argc == 2 && strcmp(argv[1], "--test") == 0){
+	run();
+	return 0;
+    }
+    SortList begin;
+    begin.next = NULL;
+    bool flag = 1;
+    while (flag){
+	int c, value;
+	printf("%s \n", "0: close the program");
+	printf("%s \n", "1: add a value to the list");
+	printf("%s \n", "2: delete a value");
+	printf("%s \n", "3: output a list");
+	scanf ("%d", &c);
+	switch(c){
+	    case 0:
+		flag = 0;
+		break;
+	    case 1:
+		scanf("%d", &value);
+		append(&begin, value);
+		break;
+	    case 2:
+		scanf("%d", &value);
+		DelElem(&begin, value);
+		break;
+	    case 3:
+		PrintfList(&begin);
+		break;
+	}
+    }
+    DelList(&begin);
+    return 0;
+}