The difference between “long,” “long long,” “long int,” and similar types lies in their size and range, which depend on the system and compiler. Generally:
long and long int are the same and usually represent integers with a larger range than int.
long long offers an even larger range than long.
The exact sizes and ranges are determined by the system architecture and compiler implementation (e.g., 32-bit or 64-bit systems). It’s best to use sizeof() or refer to the documentation to confirm the specific sizes on your platform.