| Character and string I/O functions | |
| puts_c | Write a code string to standard output |
| Formatted output functions | |
| printf_c | Write code string formatted text to standard output |
| snprintf_c | Write code string formatted text to a string with truncation |
| sprintf_c | Write code string formatted text to a string |
| vprintf_c | Write code string formatted text to standard output using variable argument context |
| vsnprintf_c | Write code string formatted text to a string with truncation using variable argument context |
| vsprintf_c | Write code string formatted text to a string using variable argument context |
| Formatted input functions | |
| scanf_c | Read code string formatted text from standard input |
| sscanf_c | Read code string formatted text from code string |
| vscanf_c | Read code string formatted text from standard using variable argument context |
| vsscanf_c | Read code string formatted text from a string using variable argument context |