Anyone listing the program would see the number 10, but when executed the program would jump to line 100.

Storage (and some external registers) could be displayed while the program was executing.

Contains machine code and related data that are loaded into memory when a program executes.

The tcov utility gives information on how often a program executes segments of code.

Very few programs execute on a bare machine.

Because this starting value is hard-coded, the algorithm generates the same game world every time the program executes.

Creating a new subprocess requires enough memory in which both the child process and the current program can execute.

A value of zero indicates that the spawned program executed successfully.

A negative value indicates that the spawned program did not execute, and errno is set.

When a program is running, or executing, it is said to be in run-time.