StdIO Functions

Source location

  • The main source for string functions is located at: libc/src/stdio with subdirectories for internal implementations.

Implementation Status

Formatted Input/Output Functions

These functions take in format strings and arguments of various types and convert either to or from those arguments. These functions are the current focus (owner: michaelrj).

Function_Name Available
*printf WIP
*scanf  

FILE Access

These functions are used to interact with the FILE object type, which is an I/O stream, often used to represent a file on the host’s hard drive. Currently the FILE object is only available on linux.

Function_Name Available
fopen
freopen  
fclose
fflush
setbuf  
setvbuf  
ftell  
fgetpos  
fseek
fsetpos  
rewind  
tmpfile  
clearerr
feof
ferror
flockfile
funlockfile

Operations on system files

These functions operate on files on the host’s system, without using the FILE object type. They only take the name of the file being operated on.

Function_Name Available
remove
rename  
tmpnam  

Unformatted FILE Input/Output Functions

The gets function was removed in C11 for having no bounds checking and therefor being impossible to use safely.

Function_Name Available
(f)getc  
fgets  
getchar  
fread
(f)putc  
(f)puts
putchar  
fwrite
ungetc