运行时和运行时库 (摘录)
Runtime : When a program is running, or executing, it is said to be in runtime. The term is mostly used by software developers to specify when errors in a program occur. A "runtime error" is an error that happens while the program is executing. For example if a program told you that 2 + 2 was 5000 that would be a runtime error. A memory leak where the program sucks up excessive amounts of system memory is also a runtime error. The other major type of program error is a compile-time error where the application will not even compile into an executable program. Examples of compile-time errors are