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fopen and getw not working as expected

fopen and getw not working as expected

fopen and getw not working as expected


I am working on a Solaris server and have a piece of C code that is meant to read in a text file that contains an integer and it should then increment the integer by 1, use it and then write the new value to the text file.

My code has:

FILE *uniq_id_file; -- this line is declared near the top of the file after the #include section

int number = 0;
int gcount = 0;

uniq_id_file = fopen("/vobs/src/tool/uniqid", "rb");
 printf("number is: %d\n",number);
 gcount = number;
 printf("gcount is: %d\n",gcount);
fclose (uniq_id_file);

My file uniqid has the single entry 9000 in it. When I run my C program the printf's are displaying:

Main number is: 959459386
Main gcount is: 959459386

Why is this?
How can I get it to assign the actual value of uniqid to gcount?



RE: fopen and getw not working as expected

For reading numbers use fscanf


#include <stdio.h>

int main () {
  FILE *uniq_id_file;

  int number = 0;
  int gcount = 0;

  uniq_id_file = fopen("uniqid", "rb");
  while(fscanf(uniq_id_file, "%d", &number)!=EOF)
   printf("number is: %d\n",number);
   gcount = number;
   printf("gcount is: %d\n",gcount);
  fclose (uniq_id_file);
  return 0;


number is: 9000
gcount is: 9000

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