Reading file using fscanf in C

Question

I need to read and print data from a file  I wrote the program like below      include lt stdio h gt   include lt conio h gt  int main void    char item 9   status   FILE  fp   if   fp   fopen  D   Sample  database txt    r        NULL        printf  No such file n        exit 1         if  fp    NULL        printf  Error Reading File n       while fscanf fp   s  c  item  amp status     1               printf   n s  t  c   item status         if feof fp                            puts  EOF             else        puts  CAN NOT READ          getch      return 0          the database txt file contains Test1 A Test2 B Test3 C    When I run the code  it prints      CAN NOT READ     Please help me to find out the problem

User · Answer

fscanf will treat 2 arguments  and thus return 2  Your while statement will be false  hence never displaying what has been read  plus as it has read only 1 line  if is not at EOF  resulting in what you see

User · Answer

In your code   while fscanf fp   s  c  item  amp status     1      why 1 and not 2  The scanf functions return the number of objects read

User · Answer

First of all  you re testing fp twice  so printf  Error Reading File n    never gets executed   Then  the output of fscanf should be equal to 2 since you re reading two values

User · Answer

scanf   and friends return the number of input items successfully matched  For your code  that would be two or less  in case of less matches than specified   In short  be a little more careful with the manual pages    include  lt stdio h gt   include  lt errno h gt   include  lt stdbool h gt   int main void        char item 9   status       FILE  fp       if  fp   fopen  D   Sample  database txt    r        NULL            printf  No such file n            exit 1              while  true            int ret   fscanf fp    s  c   item   amp status           if ret    2              printf   n s  t  c   item  status           else if errno    0                perror  scanf                 break            else if ret    EOF                break            else               printf  No match  n                        printf   n        if feof fp             puts  EOF              return 0

[c] Reading file using fscanf() in C

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