单项选择题 In（）programming， the user determines the sequence of instructions to be executed ，not the programmer.

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.

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.