### A good answer might be:

12 bytes, four bytes for each of three integers.

# Fields within a Struct

A block of memory for this struct consists of twelve bytes. The first field (`age`) is located at a displacement of zero into the block. The second field (`pay`) is located at a displacement of four into the block. The last field (`class`) is located at a displacement of eight into the block.

    struct
    {
      int age;
      int pay;
      int class;
    };

Warning: C and C++ compilers are free to rearrange the order of items inside a struct and to do other things for optimization or hardware compatibility. Worse yet, different compilers may do different things. Do not write C programs that make assumptions about the internal structure of a struct.

### QUESTION 8:

Say that register `$s1` held the address of a struct like the above. Fill in the blank so that register `$t0` gets the value in the `pay` field:

    lw $t0,____(____)    # load the pay