fgets

Read string from a file, stopping after a newline, or EOF, or n characters have been read.

Syntax

• res = fgets(f)
• res = fgets(f, n)

Input argument

• f - a file descriptor
• n - a scalar: number of characters

Output argument

• res - a string or -1

Description

Read string from a file, stopping after a newline, or EOF, or n characters have been read.

If there is no more character to read, fgets will return -1.

If n is omitted, fgets reads until the next newline.

characters encoding uses fopen parameter.

Examples

fid = fopen([nelsonroot(), '/etc/startup.m']);
  tline = fgets(fid);
  while ischar(tline)
  disp(tline)
  tline = fgets(fid);
  end

  fclose(fid);

fid = fopen([nelsonroot(), '/etc/startup.m']);

  tline = fgets(fid, 5);
  while ischar(tline)
  disp(tline)
  tline = fgets(fid, 5);
  end

  fclose(fid);

See also

fclose, fopen, fgetl.

History

Author

Allan CORNET