Exceptions in C++ are rotten.

    void read_file_by_lines(const char* path, void (*callback)(const char* line)) {
        FILE* file = fopen(path, "r");
        
        size_t length = 0;
        char* line = NULL;
        
        while (-1 != getline(&line, &length, file)) {
            callback(line);
        }
        
        free(line);
        fclose(file);
    }

This C function should be compatible with C++. If exceptions are off, it is. If exceptions are on then it's dangerous because if an exception is thrown through callback, then the file handle and line buffer will leak.

C++ exceptions are predicated on the assumption that all resources are managed using RAII. In the real world, this isn't true, especially considering that C doesn't even have RAII.

Python programmers (including me) love their exceptions, because Python is a dynamic language, and exposes system resources as reference counted objects.