what's the difference between 64 and 32 bit code example

Example: what is the difference between 32 bit and 64 bit

Windows 10 64-bit is recommended if you have 4 GB or more RAM.
Windows 10 64-bit supports up to 2 TB of RAM, while Windows 10 32-bit can utilize up to 3.2 GB.
The memory address space for 64-bit Windows is much larger, which means, you need twice as much memory than 32-bit Windows to accomplish some of the same tasks.