How many bytes does storing a number occupy in memory?

In Go, the size occupied by a numeric type depends on the specific data type:

• int8 and uint8 occupy 1 byte
• int16 and uint16 occupy 2 bytes
• int32 and uint32 occupy 4 bytes
• int64 and uint64 occupy 8 bytes
• int and uint occupy 4 bytes on 32-bit systems and 8 bytes on 64-bit systems

For example:

var a int32 = 100
fmt.Println(unsafe.Sizeof(a)) // Will output 4

The size depends on the architecture and the chosen type, so it is important to use the appropriate type to save memory and improve performance.