Thread: Can someone please help deadline tomorow

I need to implement two searches into this program, a search for an ISBN and a search for a title but i have no idea how to,o can someone please do it for me or set me off in the correct direction???

Thanks

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define SIZE 40
/* global variables */			
typedef struct
{
  char ISBN[20];
  char Author[SIZE];
  char Title[SIZE];
}record_structure;  

FILE *record_file;
int choice;
record_structure record_array[8];
int num_records;
int searchresult;
char searchtitle[SIZE];

/* function prototypes */
void intro();
void menu();
void close();
void add_book();
void option2();
void option3();
void display_all_records();
void screen_pause();

/*******************************************************************************************/

int main()
{
	intro();
	do
	{
		menu();
	}
	while (choice!=5);
	close();
    return 0;
}/* end of main function */

/*******************************************************************************************/

void intro()
{
	system("cls");
	printf("\n\n\n\n\n\n\tWelcome to Forth Valley's Collection of Technical Books");
	screen_pause();
}/*end of intro function*/

/*******************************************************************************************/

void add_book()
{
	record_file = fopen("C:\\bookfile.bin","wb");
    
    system("cls");
    
    printf( "\n\nAdd book details");
    
    for(num_records=0;num_records<=9;num_records++)
         {
           printf( "\n\nISBN: ");
           fflush(stdin);
           fgets(record_array[num_records].ISBN, 20, stdin);
           printf( "\n\nAuthor: ");
           fflush(stdin);
           fgets(record_array[num_records].Author, SIZE, stdin);
           printf( "\n\nTitle: ");
           fflush(stdin);
           fgets(record_array[num_records].Title, SIZE, stdin);
           printf( "------------------------------------" );
           
           fwrite(&record_array[num_records],sizeof(record_structure),1,record_file);
         
          } 
           printf( "\n\nYou have succesfully inputed the details of 8 books" );
           fclose(record_file);
    
    screen_pause();
}/* end of dummy menu option 1 function */

/*******************************************************************************************/

void option2()
{
	system("cls");
	printf("Search for ISBN ");
	screen_pause();
}/* end of dummy menu option 2 function */

/*******************************************************************************************/

void option3()
{
	printf ("Please enter the title of the book you are searching for: ");
    // Declare searchresult as int and searchisbn as string:
    searchresult = strcmp(record_array[num_records].ISBN,searchtitle); //string compare
    if (searchresult ==0)

{	
/* display details */
   printf("\n Title Author ISBN ");
   printf("\n %4i %-30s %s",num_records,record_array[num_records-1].Author,
   record_array[num_records-1].Title);	
}
   screen_pause();
    num_records++;
/* end of else */
/* end of while */
/* end of display_one_record */ 
	
}

/*******************************************************************************************/

void display_all_records()
{
	record_file = fopen("C:\\bookfile.bin","rb");
    
    system("cls");
    
    printf("\n\t\t\tDetails of all books");
	printf("\n\n\n ID NO\t\tISBN\t\tAuthor\t\tTitle");
	
	num_records=0;
	fread(&record_array[num_records],sizeof(record_structure),1,record_file);
	
	while(!feof(record_file))
	{	
		printf("\n%3i  %18s  %35s %55s ",num_records,record_array[num_records].ISBN,
			record_array[num_records].Title,record_array[num_records].Author);
		fflush(stdin);
		num_records++;
		fread(&record_array[num_records],sizeof(record_structure),1,record_file);
	}
	
	screen_pause();
	
    fclose(record_file);
}

/*******************************************************************************************/

void close()
{
	system("cls");
	printf("\n\n\n\n\n\n\tThank you for using this program");
	screen_pause();
}/* end of close function */

/*******************************************************************************************/

void menu()
{
	system("cls");
	printf("\n\nMENU");
	printf("\n\n1 - Add new entry: ");
	printf("\n2 - Book search by ISBN: ");
	printf("\n3 - Book search by title: ");
	printf("\n4 - Show details off all books stored: ");
	printf("\n5 - Exit Program:");
	
    printf("\n\nEnter your choice ");
    scanf("%i", &choice);
    while((choice<1)||(choice>5))
    {
     printf("\n\nYou eneterd an invalid number please enter a valid number");
     printf("\n\n\tEnter your choice: ");
     scanf("%i", &choice);
     }
       
	switch(choice)
	{
		case 1 : add_book();break;
		case 2 : option2(); break;
		case 3 : option3(); break;
		case 4 : display_all_records() ; break;
		case 5 :  break;
	}
}/* end of menu function */

/*******************************************************************************************/

void screen_pause()
{
	printf("\n\n\tPress any key to continue.....");
	getch();
}/* end of screen_pause function */