* Checks that all "begin" symbols in a C program are matched with their "end" symbols `{...}`, `[...]`, `(...)`, `"..."`, and `'...'`, and if not, reports excess, missing, or improperly nested ones. * Counts the number of identifiers (including keywords). For example, reporting `7` for
```c void func(int arg) { int index = 27; index += 1; } ```
You can use any C library functions except for regular expression or parse libraries in your program.
