Returns

byte
print() will return the number of bytes written, though reading that number is optional

Note that the data is not physically written to the SD card until the file is closed (with a call to the close() function) or explicitly synced (with the flush() function). If the file was opened in mode FILE_APPEND, the data will be appended to the end of the file, regardless of the current cursor position set by seek().

Note that the data is not physically written to the SD card until the file is closed (with a call to the close() function) or explicitly synced (with the flush() function).

file: an instance of the File class (returned by SD.open())

file.print(data)
file.print(data, BASE)

file: an instance of the File class (returned by SD.open())

• println()
• write()

SD : File class

print()

Description

Print data to the file, which must have been opened for writing. Prints numbers as a sequence of digits, each an ASCII character (e.g. the number 123 is sent as the three characters '1', '2', '3').

Syntax

client.print(data)
client.print(data, BASE)

Parameters

data: the data to print (char, byte, int, long, or string)

BASE (optional): the base in which to print numbers: BIN for binary (base 2), DEC for decimal (base 10), OCT for octal (base 8), HEX for hexadecimal (base 16).

Example

See Also

• println?
• write?