### Conversion specifiers supported by the `scanf()` family

Like `printf()`, `scanf()` doesn't support all the conversion specifiers by default. If you need this support, just `#`define the macros `INT32_IO` and/or `FLOAT_IO` when `stdio.c` is compiled18.

Specifier | Data types of parameter | Support
`%c` | pointer to `int, char` | always
`%s` | pointer to `char, int, etc.` | always
`%d` | pointer to `int, char` | always
`%u` | pointer to `unsigned int, unsigned char` | always
`%x` | pointer to `int, char,` `unsigned int, unsigned char` | always
`%ld` | pointer to `long` | always
`%lu` | pointer to `unsigned long` | always
`%lx` | pointer to `long, unsigned long` | always
`%lld` | pointer to `long long` | `INT32_IO` defined
`%llu` | pointer to `unsigned long long` | `INT32_IO` defined
`%llx` | pointer to `long long, unsigned long long` | `INT32_IO` defined
`%f` | pointer to `float` (standard or scientific notation) | `FLOAT_IO` defined

#### Footnotes

... compiled 18
  You can either edit the source code, or just use `-DINT32_IO -DFLOAT_IO` at `cpik` invocation.