File IO Quick Guide

Type	Application	Example	Notes
FILE*'s fopen fclose	before you can interact with a file, you need to create a connection or stream		save the connection declare a FILE pointer open the file call the fopen function send in the filename string send in the mode string (double quotes, not single!) "r" is read "w" is write "a" is append verify the connection is made check the FILE pointer for the NULL pointer if it's the NULL pointer, quit CAUTION! If the FILE pointer is NULL, you will get a segmentation fault if you use it. close the connection (after interacting with the file) call the fclose function send in the FILE pointer
fprintf	outputs text to a stream		this looks just like Formatted IO, but with the FILE pointer as the first argument you can use still things like field width and precision to format how your output looks
fscanf	gets input text from a stream		this looks just like Formatted IO, but with the FILE pointer as the first argument
fgets	gets input text as a C-Style String from a stream		this looks just like Formatted IO with C-Style Strings, but with the FILE pointer as the last argument