当按住鼠标右键时，在Scene视图中进入的是哪种模式?
C program is executed from ()
A. The main function of this program starts and ends with the main function.
B. This procedure begins with the first function and ends with the last function in this procedure file.
C. The main function of this program starts and ends at the last function of this program file.
D. This procedure starts with the first function and ends with the main function.
The following statement is incorrect.
A C source program can be composed of one or more functions.
B. A C source program must contain a main function.
C. The basic unit of program is function
D. In C program, the annotation of / * * / class can only be placed after one statement
C51 language: in a source program, the main function position.
A. It has to be in the beginning
B. Must be after all functions
C. You can do whatever you want
D. It has to be at the end
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