fgets()

Synopsis

int fgets(string &s, int count, file f);

Parameters

Return value

The function returns the number of characters read or 0 in the event of errors.

Error

Description

Reads a number of maximum count characters to the string s from the file f up to a line or file end. The line feed character ("Newline") is also imported to the string. The function fgets()differs from the function of the ANSI C standard with the same name in that it reads out count-1 characters and returns the read string.

Example

main()
{
  string fname="C:/TEMP/TEST.TXT",st;
  file f;
  int i;
  i=access(fname,F_OK); // Does the file already exist ?
  if (i!=0) // File does not exist yet
  {
    f=fopen(fname,"w+"); // Create a new file
    for (i=0;i<=10;i++)
    fputs("Zeile "+i+"/n",f); // 10 lines with endl
    rewind(f); // Back to the beginning
    while (feof(f)==0) // as long as it is not at the end of the file
    {
      fgets(st,20,f); // Import string again
      Debug(st); // ...and output it
    }
    fclose(f); // close file
  }
  else DebugN("File already exists!");
}

Assignment

File function

Availability

CTRL