search in a file in c - c

Question

the data on the file.txt are placed as shown.
My Code is this:
int searchBookname()
{
FILE *myFile=fopen("file.txt","r+");
if (myFile!=NULL) // file exists
{
char tmp1[512];
char tmp2[512];
while(fgets(tmp1,512,myFile)!=EOF)
{
puts("Insert the Book Name: ");
scanf("%s",tmp2);
if(strstr(tmp1,tmp2)!=NULL){
printf("the book is found: %s\n\n",tmp1);
}else{
puts("\nSorry there was no Match with this name! Maybe Book is not recorded yet :(\n");
}
}
}else{ // file doesn't exist
puts("\nDatabase is not created yet. Please record a new book to create a simple database\n");
exit(0);
}
fclose(myFile); // closing the file
}
It keeps skipping the if statement 2 times for some reason and on the
3rd time it prints the correct result.
This happen for whatever book I try to search.
See here
How can I make it find the result without skipping the if statement.

Answer 1

You read the file line by line. So in the third loop/line there is a record with 'book1'. Code is working correctly as it is. Maybe you want to ask the user for a book name outside of the while loop and search in every line for the given book name. If there is, you can print you message and break from the loop.
int searchBookname()
{
FILE *myFile=fopen("file.txt","r+");
if (myFile != NULL) // file exists
{
char tmp1[512], tmp2[512];
puts("Insert the Book Name: ");
scanf("%s",tmp2);
// Skip the first two lines of the file
fgets(tmp1,512,myFile);
fgets(tmp1,512,myFile);
while(fgets(tmp1,512,myFile) != EOF)
{
if(strstr(tmp1,tmp2) != NULL)
{
printf("the book is found: %s\n\n",tmp1);
break;
}
else
{
puts("\nSorry there was no Match with this name! Maybe Book is not recorded yet :(\n");
}
}
}
else
{ // file doesn't exist
puts("\nDatabase is not created yet. Please record a new book to create a simple database\n");
exit(0);
}
fclose(myFile); // closing the file
}

Answer 2

It is obvious.
First 2 lines of file are following:
Record_Date ...
-> (empty line)
You are reading file line by line and check book name in each line. So if must fail for first 2 times.
If you want to find a book in your file, your approach is incorrect. There are different approaches for this, but simplest is reading book records into an structure array, and then look for book name in that array.