search also finished

main.c

@@ -44,12 +44,15 @@ int main(){
             check = false;
             break;
         default://invalid input
-            printf("Invalid choice\n");
+            printf("Invalid choice...press anykey to retry....\n");
-            check = false;
+            fflush(stdin);
+            getchar();
+            check = true;
+            
             break;
         }
 
-
+        fflush(stdin);
     } while (check);
     
     return 0;

normal_user.h

@@ -19,9 +19,13 @@
 #endif // !SORT_H
 #define PAGE_SIZE 20
 
-//for sort list
+//fucntions for menu
 void list_items();
+void search_item();
+void print_page(struct inventory db, int cur, int end,struct Map* map);
 int normal_menu_user_choices();
+
+//main of normal user
 bool normal_menu(){
     system("cls");
     welcome_message();
@@ -34,7 +38,7 @@ bool normal_menu(){
             list_items();
             break;
         case 2://Search item
-            // search_item();
+            search_item();
             break;
         case 3://scan barcode
             // scan_barcode();
@@ -51,7 +55,21 @@ bool normal_menu(){
     return true;
 }
 
-
+//universal functions for normal user
+struct Map* sortItems(struct inventory db, int sort);
+void show_item(struct inventory db,int index){
+    system("cls");
+    printf("Product: %s\n", db.row[index].product);
+    printf("Catergory: %s\n", db.row[index].category);
+    printf("Brand: %d\n", db.row[index].brand);
+    printf("Price: $%lf\n", db.row[index].price);
+    printf("Stock: %d\n", db.row[index].stock);
+    printf("Barcode: %ld\n",db.row[index].barcode);
+    printf("Press any key to return to the list\n");
+    fflush(stdin);
+    getchar();
+    return;
+}
 int normal_menu_user_choices(){
     int choice;
     printf("You can buy items inside the 2 option below\n");
@@ -63,24 +81,11 @@ int normal_menu_user_choices(){
     scanf("%d", &choice);
     return choice;
 }
-
+void list_page(struct inventory db,struct Map* map,int row){//user for showing list result and search result
-//list items
-void show_item(struct inventory db,int index);
-void print_page(struct inventory db, int cur, int end,struct Map* map);
-struct Map* sortItems(struct inventory db, int sort);
-void list_items(){
-    system("cls");
-    welcome_message();
-    //get the list of items from the database
-    //print the list of items
-    //prompt user to select an item
-    //if user selects an item, display the item's details
     int choice = -1;
     int page = 0;
     int page_size = PAGE_SIZE;
-    struct inventory db = read_db_invt();
+    int total_pages = ceil((double)row / page_size);
-    int total_pages = (int)ceil((double)db.db.row_count / page_size);
-    struct Map* map = NULL;
     do{
 
     //options
@@ -98,7 +103,7 @@ void list_items(){
 
     //print items
     if(page + 1 >= total_pages){
-        print_page(db, page * page_size, db.db.row_count,map);
+        print_page(db, page * page_size, row,map);
     }else{//sorted)
         print_page(db, page * page_size, (page + 1) * page_size,map);
     }
@@ -124,9 +129,8 @@ void list_items(){
         }else if(choice == page_size+5){
             printf("Enter page size: ");
             scanf("%d", &page_size);
-            total_pages = ceil(db.db.row_count / page_size);
+            total_pages = ceil(row / page_size);
-        }else if(choice >= 9 && choice < db.db.row_count+9){
+        }else if(choice >= 9 && choice < row+9){
-            printf("s");
             show_item(db,choice - 9 + page_size*page);   
         }else if(choice != 0){
             printf("Invalid choice\n");
@@ -136,6 +140,35 @@ void list_items(){
 
     }while(choice != 0);
 }
+//print the list for the page
+void print_page(struct inventory db, int cur, int end,struct Map* map){
+    for (int i = cur; i < end; i++)
+    {
+        if(map != NULL){
+            printf("%d item: %s\n", i + 9, db.row[map[i].key].product);
+        }
+        else{
+            printf("%d item: %s\n", i + 9, db.row[i].product);
+        }
+    }
+}
+//list items
+
+
+void list_items(){
+    system("cls");
+    welcome_message();
+    //get the list of items from the database
+    //print the list of items
+    //prompt user to select an item
+    //if user selects an item, display the item's details
+    
+    struct inventory db = read_db_invt();
+    struct Map* map = NULL;
+    list_page(db,map,db.db.row_count);
+}
+
+//for sorting
 struct Map* sortItems(struct inventory db, int sort){
     struct Map *map = malloc(sizeof(struct Map) * db.db.row_count);
     for (int i = 0; i < db.db.row_count; i++){
@@ -177,33 +210,79 @@ struct Map* sortItems(struct inventory db, int sort){
     return map;
 }
 
-void print_page(struct inventory db, int cur, int end,struct Map* map){
+
-    for (int i = cur; i < end; i++)
+
-    {
+
-        if(map != NULL){
+
-            printf("%d item: %s\n", i + 9, db.row[map[i].key].product);
+//search items
+char* prompt_search();
+char* searchItems(struct inventory db, char* searchstr);
+void search_item(){
+    system("cls");
+    welcome_message();
+    //search for item
+    //prompt user to select an item
+    //if user selects an item, display the item's details
+    struct inventory db = read_db_invt();
+    int total_pages = 0;
+    struct Map* map = NULL;
+    do{
+
+    //options
+    int breakout = 0;
+    bool valid = false;
+    do{
+        system("cls");
+        welcome_message();
+        printf("0 exit\n");
+        printf("1 search\n");
+        
+        scanf("%d", &breakout);
+        if(breakout == 1 || breakout == 0){
+            valid = true;
+        }else{
+            printf("Invalid choice\n");
         }
-        else{
+    }while(!valid);
-            printf("%d item: %s\n", i + 9, db.row[i].product);
+    if(breakout == 0){
+        break;
+    }
+    char* searchstr = prompt_search();
+    printf("searching...\n");
+    map = searchItems(db,searchstr);
+    if(map[0].value == 0){
+        list_page(db,map+1,map[0].value);//ofset map, as it is use to store the size
+    }else{//empty search
+        printf("No result found\n");
+        printf("Press any key to continue\n");
+        fflush(stdin);
+        getchar();
+
+    }
+    }while(true);//break on top
+
+}
+
+
+char* prompt_search(){
+    printf("Enter search string:(largest length 100) ");
+    char* searchstr = malloc(sizeof(char) * 100);
+    scanf("%s", searchstr);
+    return searchstr;
+}
+
+char* searchItems(struct inventory db, char* searchstr){
+    struct Map* map = malloc(sizeof(struct Map) * (db.db.row_count+1));
+    int k = 1;
+    for (int i = 0; i < db.db.row_count; i++){
+        map[k].key = i;
+        if(strstr(db.row[i].product,searchstr) != NULL){
+            map[k].value = db.row[i].product;
+            k++;
         }
     }
+    map[0].value = k-1;
+    map[0].key = -1;
+    return map;
 }
 
-void show_item(struct inventory db,int index){
-    system("cls");
-    printf("Product: %s\n", db.row[index].product);
-    printf("Catergory: %s\n", db.row[index].category);
-    printf("Brand: %d\n", db.row[index].brand);
-    printf("Price: $%lf\n", db.row[index].price);
-    printf("Stock: %d\n", db.row[index].stock);
-    printf("Barcode: %ld\n",db.row[index].barcode);
-    printf("Press any key to return to the list\n");
-    fflush(stdin);
-    getchar();
-    return;
-}
-
-
-
-//
-

sorting.h

@@ -8,4 +8,5 @@ int compare_decending(const void *a, const void *b){
 }
 int compare_ascending(const void *a, const void *b){
     return (*(struct Map *)a).value - (*(struct Map *)b).value;
-}
+}
+