Daily practice for the 2020 Computer Level 2 C Language Test (June 17)

Friends who are preparing for the National Computer Level 2 C Language Examination, how is your review going? The editor of Global Ivy has released a daily practice for the 2020 Computer Level 2 C Language Exam for your reference and review. Friends, come and do it and test yourself! To learn more about the National Computer Level 2 C language test preparation materials, please pay attention to the Global Ivy League Computer Level 2 channel.

Daily practice for the 2020 Computer Level 2 C Language Examination (June 17)

1. The C language program starts executing from ( ).

A. An executable statement in the program

B. A function in the program

C. The main function in the program

D , contains functions in the file

Answer: C

2. The correct one of the following statements is ().

A. C language programs always start execution from a defined function

B. In C language programs, the function to be called must be defined in the main() function

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C and C language programs always start execution from the main() function

D. The main() function in C language programs must be placed at the beginning of the program

Answer: C

3. Which of the following statements about C language is wrong ().

A. The working process of C program is editing, compiling, connecting and running

B. C language is not case-sensitive.

The three basic structures of C and C programs are sequence, selection and loop

D and C programs start execution from the main function

Answer: B

4. The following correct identifier is (　).

A, -a1

B, a[i]

C, a2_i

D, int t

5. Among the following C language user identifiers, the legal one is ().

A, 3ax

B, x

C, case

D, -e2 E)union

Answer: B

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