No way to parse integers in C

The article argues that C's standard library functions for parsing integers are fundamentally broken or unreliable: `atol()` silently fails with no error reporting, `strtoul()` produces unusable results with negative numbers, and only `strtol()` can be used correctly—but requires careful error handling with `errno` checking and validation of the entire input string. The author concludes that C provides no straightforward, safe way to parse integers from untrusted input, though notes that C++'s `std::from_chars()` offers a better alternative.