The fprintf function behaves like its ANSI C language namesake with these exceptions and extensions: This ensures that lines in the file are terminated in such a way as to be compatible with all applications that might use the file. When writing text to a file on Windows, it is recommended that you open the file in write-text mode (e.g., fopen(file_id, 'wt')). This table lists the escape character sequences you use to specify nonprinting characters in a format specification. Hexadecimal notation (using uppercase letters A- F)Ĭonversion characters %o, %u, %x, and %X support subtype specifiers. Hexadecimal notation (using lowercase letters a- f) The more compact of %e or %f, as defined in. ) specifying the number of digits to be printed to the right of the decimal pointĬonversion characters specify the notation of the output.Įxponential notation (using a lowercase e as in 3.1415e+00)Įxponential notation (using an uppercase E as in 3.1415E+00) You can control the width and precision of the output by including these options in the format string.Ī digit string specifying the minimum number of digits to be printedĪ digit string including a period (.
Left-justifies the converted argument in its field You can control the alignment of the output using any of these optional flags.
You specify these elements in the following order: The format string can contain escape characters to represent nonprinting characters such as newline characters and tabs.Ĭonversion specifications begin with the % character and contain these optional and required elements: A conversion specification controls the notation, alignment, significant digits, field width, and other aspects of output format. The format argument is a string containing C language conversion specifications. See fopen for more information.) Omitting fid causes output to appear on the screen. (It can also be 1 for standard output (the screen) or 2 for standard error. errmsg is an optional output argument that returns an error message string if an error occurred, or an empty string if an error did not occur.Īrgument fid is an integer file identifier obtained from fopen. fprintf returns a count of the number of bytes written. )įormats the data in the real part of matrix A (and in any additional matrix arguments) under control of the specified format string, and writes it to the file associated with file identifier fid.
Matlab fprintf driver#
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