File Opening and Closing
fclose	Close one or more open files
fopen	Open a file or obtain information about open files
Unformatted I/O
fread	Read binary data from file
fwrite	Write binary data to a file
Formatted I/O
fgetl	Return the next line of a file as a string without line terminator(s)
fgets	Return the next line of a file as a string with line terminator(s)
fprintf	Write formatted data to file
fscanf	Read formatted data from file
File Positioning
feof	Test for end-of-file
ferror	Query MATLAB about errors in file input or output
frewind	Rewind an open file
fseek	Set file position indicator
ftell	Get file position indicator
String Conversion
sprintf	Write formatted data to a string
sscanf	Read string under format control
Specialized File I/O
dlmread	Read an ASCII delimited file into a matrix
dlmwrite	Write a matrix to an ASCII delimited file
hdf	HDF interface
imfinfo	Return information about a graphics file
imread	Read image from graphics file
imwrite	Write an image to a graphics file
textread	Read formatted data from text file
wk1read	Read a Lotus123 WK1 spreadsheet file into a matrix
wk1write	Write a matrix to a Lotus123 WK1 spreadsheet file