Assignment about professionally Programming a library

Assignment1/evaluation.c

@@ -0,0 +1,167 @@
+#include "dll.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+extern int
+diff (void *root1,    /*pointer to first node of data struture 1*/
+        void *root2,    /*pointer to first node of data struture 2*/
+        void *(*iterator)(void *), /*Iterator function callback*/
+        int (*comparator)(void *, void *),
+        void *(*get_app_data)(void *)); /*Comparison function callback*/
+
+
+/*Application specific data structures*/
+typedef struct student_{
+    char name[32];
+    unsigned int year_of_birth;
+    unsigned int height;
+    unsigned int weight;
+    unsigned int total_marks;
+} student_t;
+
+
+/*Step 2 : Implement list iterator function here*/
+void* list_iterator (void *list_node){
+
+    /*write your code here*/
+
+     dll_node_t *_node = (dll_node_t *)list_node;
+    
+    if( _node == NULL ) return NULL;
+    
+
+    return (void *)_node->right;    
+}
+
+/*Step 3 : implement student comparator function here*/
+
+int student_comparator (void *_studentobj1, void *_studentobj2){
+
+    /*Write your code here*/
+        student_t *_stu1 = (student_t *)_studentobj1;
+        student_t *_stu2 = (student_t *)_studentobj2;
+        
+        if( !_stu1 && !_stu2 )
+            return 0;
+        else if( !_stu1 && _stu2 )
+            return -1;
+        else if( _stu1 && !_stu2 )
+            return -1;
+
+
+        if( strcmp(_stu1->name,_stu2->name) != 0 )
+            return -1;
+
+        if( _stu1->year_of_birth != _stu2->year_of_birth )
+            return -1;
+            
+        if( _stu1->height != _stu2->height )
+            return -1;
+
+        if( _stu1->weight != _stu2->weight )
+            return -1;
+
+        if( _stu1->total_marks != _stu2->total_marks )
+            return -1;
+
+
+        return 0;
+} 
+
+/*Step 4 : implement get_app_data_from_list_node function*/
+void*
+get_app_data_from_list_node(void *list_node){
+
+    /*Write your code here*/
+
+    dll_node_t *_node = (dll_node_t *)list_node;
+    if( _node == NULL )
+        return NULL;
+    
+    return (void *)_node->data;   
+ } 
+
+int
+main(int argc, char **argv){
+
+    /*Student database list 1*/
+    student_t *student1 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student1->name, "Abhishek", strlen("Abhishek"));
+    student1->year_of_birth = 2000;
+    student1->height = 167;
+    student1->weight = 80;
+    student1->total_marks = 100;
+
+    student_t *student2 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student2->name, "Sagar", strlen("Sagar"));
+    student2->year_of_birth = 2001;
+    student2->height = 170;
+    student2->weight = 82;
+    student2->total_marks = 80;
+
+    student_t *student3 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student3->name, "Vineet", strlen("Vineet"));
+    student3->year_of_birth = 2002;
+    student3->height = 161;
+    student3->weight = 62;
+    student3->total_marks = 72;
+
+    student_t *student4 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student4->name, "Neeraj", strlen("Neeraj"));
+    student4->year_of_birth = 1998;
+    student4->height = 167;
+    student4->weight = 76;
+    student4->total_marks = 67;
+
+
+    dll_t *student_db1 = get_new_dll();
+    add_data_to_dll(student_db1, student1);
+    add_data_to_dll(student_db1, student2);
+    add_data_to_dll(student_db1, student3);
+    add_data_to_dll(student_db1, student4);
+
+
+    /*Student database list 2*/
+    student_t *student5 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student5->name, "Abhishek", strlen("Abhishek"));
+    student5->year_of_birth = 2000;
+    student5->height = 167;
+    student5->weight = 80;
+    student5->total_marks = 90;
+
+    student_t *student6 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student6->name, "Sagar", strlen("Sagar"));
+    student6->year_of_birth = 2001;
+    student6->height = 170;
+    student6->weight = 82;
+    student6->total_marks = 80;
+
+    student_t *student7 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student7->name, "Vineet", strlen("Vineet"));
+    student7->year_of_birth = 2002;
+    student7->height = 161;
+    student7->weight = 62;
+    student7->total_marks = 72;
+
+    student_t *student8 = (student_t *)calloc(1, sizeof(student_t));
+    strncpy(student8->name, "Neeraj", strlen("Neeraj"));
+    student8->year_of_birth = 1998;
+    student8->height = 167;
+    student8->weight = 76;
+    student8->total_marks = 67;
+
+    dll_t *student_db2 = get_new_dll();
+    add_data_to_dll(student_db2, student5);
+    add_data_to_dll(student_db2, student6);
+    add_data_to_dll(student_db2, student7);
+    add_data_to_dll(student_db2, student8);
+
+    /*Step 6*/
+
+    if(diff((void *)student_db1->head, (void *)student_db2->head, list_iterator, student_comparator, get_app_data_from_list_node) == 0)
+        printf("Data sructures are equal\n");
+    else
+        printf("Data sructures are not equal\n");
+    return 0;
+}