| Type | Output |
|---|---|
| d or i | Signed decimal integer |
| u | Unsigned decimal integer |
| b | Unsigned binary |
| o | Unsigned octal |
| x | Unsigned hexadecimal integer (lowercase) |
| X | Unsigned hexadecimal integer (uppercase) |
| c | Single character |
| s | String of characters |
| p | Pointer address |
Upon successful return, all functions return the number of characters written, excluding the terminating null character used to end the string.