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Memory

Reminder: Computer memory … large array of consecutive data cells or bytes
  • 1 byte = 8 bits = 0x00 … 0xFF
  • char … 1 byte    int,float … 4 bytes    double … 8 bytes

Memory addresses shown in Hexadecimal notation


When a variable is declared, the operating system finds a place in memory to store the appropriate number of bytes.

If we declare a variable called k …

  • the place where k is stored is denoted by &k
  • also called the address of k

[Diagram:Pic/memoryAddresses.png]