reading a string from a file

Question

I have one text file. I have to read one string from the text file. I am using c code. can any body help ?

Answer 1

This should work, it will read a whole line (it's not quite clear what you mean by "string"):

#include 
#include 

int read_line(FILE *in, char *buffer, size_t max)
{
  return fgets(buffer, max, in) == buffer;
}

int main(void)
{
  FILE *in;
  if((in = fopen("foo.txt", "rt")) != NULL)
  {
    char line[256];

    if(read_line(in, line, sizeof line))
      printf("read '%s' OK", line);
    else
      printf("read error\n");
    fclose(in);
  }
  return EXIT_SUCCESS;
}

The return value is 1 if all went well, 0 on error.

Since this uses a plain fgets(), it will retain the '\n' line feed at the end of the line (if present).