c - read a file line by line into structure -

code :-

#include <stdio.h> #include <string.h> int main () {    file *fp;    const char s[3] = "  "; /* trying make 2 spaces delimiter */    char *token;    char line[256];     fp = fopen ("input.txt","r");    fgets(line, sizeof(line), fp);     token = strtok(line, s);     /* walk through other tokens */    while( token != null )    {       printf( " %s\n", token );        token = strtok(null, s);    } return 0; } 

input.txt below :

01  sun oct 25 16:03:04 2015  john  nice meeting you! 02  sun oct 26 12:05:00 2015  sam  how you? 03  sun oct 26 11:08:04 2015  pam  ? 04  sun oct 27 13:03:04 2015  mike  morning. 05  sun oct 29 15:03:07 2015  harry  come here.  

i want read file line line , store in variables like

int no = 01 char message_date[40] = sun oct 27 13:03:04 2015 char friend[20] = mike char message[120] = morning. 

how achieve ? possible store file line line structure

struct { int no.; char date[40]; char frined[20]; char message[120]; }; 

with above code getting following output:- (currently reading 1 line simplicity)

 01  sun  oct  25  16:03:04  2015  john  nice  meeting 

you!

one way use fgets() read each line of file , sscanf() parse each line. scanset %24[^\n] read 24 characters stopping on newline. date format has 24 characters reads date. scanset %119[^\n] reads 119 character prevent writing many characters message , stops on newline. sscanf() returns number of fields scanned 4 indicates line scanned successfully.

#include <stdio.h> #include <stdlib.h> #include <string.h>  struct text {     int no;     char date[40];     char name[20];     char message[120]; };  int main( ) {     char line[200];     struct text text = {0,"","",""};      file *pf = null;      if ( ( pf = fopen ( "input.txt", "r")) == null) {         printf ( "could not open file\n");         return 1;     }     while ( ( fgets ( line, sizeof ( line), pf))) {         if ( ( sscanf ( line, "%d %24[^\n] %19s %119[^\n]"         , &text.no, text.date, text.name, text.message)) == 4) {             printf ( "%d\n%s\n%s\n%s\n", text.no, text.date, text.name, text.message);          }     }     fclose ( pf);     return 0; }