[单项选择]In C program, it is convenient to use a ______ to exit from a loop.
A. end
B. break
C. stop
D. quit

[单项选择]In C program，it is convenient to use a break to exit from a (57) ．
A. function
B. loop
C. class
D. structure

[单项选择]In C program，it is convenient to use a______to exit from a loop．
A. end
B. break
C. stop
D. quit

[单项选择]In C program，all variables must be (97) before use，usually at the beginning of the function before any (98) statements。
A. stated
B. instructed
C. illustrated
D. declared

[单项选择]The space shuttle program entails the use of sophisticated technology（）.
A. enhances
B. develops
C. creates
D. involves

[单项选择]A) valuable C) convenient
B) appropriate D) favorite


A. valuable
B. appropriate
C. convenient
D. favorite

[单项选择]A) program C) protest
B) project D) provide


A. program
B. project
C. protest
D. provide

[单项选择]When a string constant is written in C program，the compiler creates （） of characters containing the characters of the string，and terminating it with"＼0".
A. a group
B. an array
C. a stack
D. a series

[单项选择]When a string constant is written in C program, the compiler creates ______ of characters containing the characters of the string, and terminating it with "/0".
A. a group
B. an array
C. a set
D. a series

[单项选择]When embedding SQL in a C language program, the prefix that should be added to all SQL statements in order to distinguish SQL statements from the host language statements is( )。
A. :
B. DECLARE
C. EXEC SQL
D. SQL

[单项选择]

Before the widespread use of computers, managers could not make full use of large amounts of valuable information about a company’s activities. The information either reached managers too late or was too expensive to be used. Today, managers are facing a wide range of data processing (数据处理) and information instruments. In place of a few financial controls, managers can draw on computer-based information systems to control activities in every area of their company. On any kind of performance measures, the information provided by these systems helps managers compare standards with actual results, find out problems, and take action before it is too late to make changes.
The introduction of computerized information system has sharply changed management control in many companies. Even a neighborhood shopkeeper may now use computers to control sales, billing, and other activities. In large companies, electronic data processing systems monitor entire projects and s
A. They couldn't made full use of the valuable information about a company's activities.
B. They .had to spend a lot of money getting the information.
C. The information didn't reach them.
D. They are facing a wide range of data processing and information instruments.