超星 - 第三章作业1-单片机的C51程序设计 - 查题吧

单选题

The definition of a function is as followsdouble fun(int x, double y) { …… }The correct function prototype of the function is declared as follows:

A. double fun (int x,double y)
B. fun (int x,double y)
C. double fun (int ,double );
D. fun(x,y) ;

单选题

According to C51 language, the type of function return value is determined by ().

A. Expression type in return statement
B. The main calling function type when the function is called
C. This function is called temporarily by the system
D. The type of function specified when defining a function

单选题

The following correct description is.

A. Function definitions can be nested, but function calls cannot be nested
B. Function definitions cannot be nested, but function calls can be nested
C. Function definition and function call can not be nested
D. Function definition and function call can be nested

单选题

The following statements are ()

A. int a[10]={0,0,0,0,0};
B. int a[10]={} ;
C. int a[ ] = {0} ;
D. int a[10]={10*1} ;

判断题

The interrupt of C51 is handled by special interrupt function.

A. 对
B. 错

判断题

In C51 language, a function is an executive code segment to complete certain related functions. It is used to describe the same thing with the other two nouns "subroutine" and "procedure".

A. 对
B. 错

判断题

In C51 programming language, when writing interrupt service function, it is necessary to consider how to write program segments for field protection, blocking other interrupts, and automatically restoring the field when returning.

A. 对
B. 错

判断题

A global variable is a variable that exists in a function and is only valid inside the function.

A. 对
B. 错

判断题

Global variables can be defined by static keywords. Because global variables exist all the time, they occupy a lot of memory units and increase the coupling of programs, which is not conducive to the migration or reuse of programs.

A. 对
B. 错

判断题

The absolute address header file absacc. H defines several macros to determine the absolute addresses of various storage spaces.

A. 对
B. 错

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