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fgets

Read line from file, keeping newline characters

Syntax

tline = fgets(fileID)
tline = fgets(fileID, nchar)

Description

tline = fgets(fileID) reads the next line of the specified file, including the newline characters. fileID is an integer file identifier obtained from fopen. tline is a character vector unless the line contains only the end-of-file marker. In this case, tline is the numeric value -1. fgets reads characters using the encoding scheme associated with the file. To specify the encoding scheme, use fopen.

tline = fgets(fileID, nchar) returns at most nchar characters of the next line. tline does not include any characters after the newline characters or the end-of-file marker.

Examples

Read and display the file fgets.m. Because fgets keeps newline characters and disp adds a newline character, this code displays the file with double-spacing:

fid = fopen('fgets.m');

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

fclose(fid);

Compare these results to the fgetl example, which replaces the calls to fgets with fgetl.

Introduced before R2006a

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