the_code

 Profile Answers by the_code 

• Aug 24th, 2011

 

This is a short program to search a string in a file. This prints the line in which the string is found:

Code
#include<stdio.h>


#include<string.h>


 


int main()


{


        FILE *fp;


        char filename[]="name.txt",line[200],search_string[]="12";


        fp=fopen(filename,"r");


        if(!fp)


        {


                perror("could not find the file


");


                exit(0);


        }


        while ( fgets ( line, 200, fp ) != NULL ) /* read a line */


        {


                if(strstr(line,search_string))


                fputs ( line, stdout ); /* write the line */


        }


        fclose ( fp );


        return 0;


}

Jonatan

• May 11th, 2016

 

I dont think it will work right... if you are search for the word "be", and you have on the text the word "best" the function strstr is gonna found...

mishraravivivek

 Profile Answers by mishraravivivek 

• Jun 17th, 2017

 

Tried for basic level format, here i cant get complete string with spaces but if you use "_" instead of " " you might get it.

Code
void search_books()


{


    int flag=0;


    lib l;


    FILE *fp;


    char book_name[50];


    fp=fopen("LBS.txt","r");


    system("cls");


    printf("Book Name?


");


    scanf("%s",book_name);


    while(fread(&l,sizeof(lib),1,fp)!=0)


    {


        if(strcmp(book_name,l.Book_Name)==0)


        {


            printf("


Book Found!!!


");


            printf("%s Written by %s


 


",l.Book_Name,l.Author_Name);


            flag=1;


        }


    }


    if(flag==0)


     printf("


Book is currently not available Better Add one to the Book Shelf!


 


");


    system("pause");


    fclose(fp);


}

jbode

 Profile Answers by jbode Questions by jbode

• Sep 13th, 2017

 

How is the file structured? Is it a text or binary file? Is it a flat file or a tree structure? Are the records fixed or variable length? Is there a delimiter between the ID and name? Are records in the file ordered by name or ID number?

Tanmay Hatkar

• Oct 8th, 2019

 

Can you please show me how to read a file until whitespace without using lib var type