单项选择题
A．top-down B．structure C．data-driven D．event-driven
The standard（）in C language contain many useful functio...
单项选择题The standard（）in C language contain many useful functions for input and output ， string handing，mathematical computations，and system programming tasks.
A．database B．files C．libraries D．subroutine
In C language，functions are important because they prov...
单项选择题In C language，functions are important because they provide a way to（）code so that a large complex program can be written by combining many smaller parts.
A．modify B．modularize C．block D．board
Very long，complex expressions in program are difficult ...
单项选择题Very long，complex expressions in program are difficult to write correctly and difficult to（）
A．defend B．detect C．default D．debug
