Unix's api is carefully designed so that programs compose easily. as an example, write and read don't take an offset as argument, but instead the kernel maintains an offset for each file descriptor. the following shell command illustrates how this unusual api simplifies composing programs.

1. declare a constant named cents_per_pound and initialize with 25. 2. get the shipping weight from user input storing the weight into shipweightpounds. 3. using flat_fee_cents and cents_per_pound constants, assign shipcostcents with the cost of shipping a package weighing shipweightpounds.

Type the correct answer in the box. spell all words correctly. under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

List the five on-board vehicle subsystems