Computer Languages Questions and Answers

Answer: A

Correct answer: loop

IF combined with GOTO sends control back to an earlier line when a condition holds, which is a loop built by hand - the way repetition was written before FOR and WHILE were available. The condition is the part that decides when to stop; the construction as a whole is the loop.

Answer: D

Correct answer: common business orientated language

COBOL is the acronym of COmmon Business Oriented Language. It is a language, not a learning, and the word is business, not binary.

Answer: C

Correct answer: format

The format of data is the arrangement in which it is laid out - how many digits, where the decimal point falls, how a date is written. Class and group describe kinds of data rather than their arrangement.

Answer: A

Correct answer: constant

A constant is a quantity whose value is fixed for the whole run of the program, as against a variable, whose value may change. Mantissa and exponent are the two parts of a floating-point number.

Answer: A

Correct answer: LET

In BASIC the assignment keyword LET may be written or omitted: 150 LET Area=Width*Length and 150 Area=Width*Length mean the same thing. The variable names are not optional, since without them nothing is assigned.

Answer: B

Correct answer: procedure

Structured programming works by stepwise refinement: each operation is broken into smaller operations, and in Pascal each is written as a procedure. The other options describe properties of data, not the means of refining an operation.

Answer: B

Correct answer: full stop

A Pascal program ends with END. - the full stop marking the end of the whole program. A semicolon separates statements and appears after every inner END, but the last one takes the period.

Answer: A

Correct answer: statement

PRINT 5.8*NUM+5 is a complete instruction: a command and what it operates on. That is a statement. The expression inside it is only one part of it.

Answer: C

Correct answer: if then else statement

Two possible actions need two branches, and the ELSE clause is what supplies the second. An if then statement has one branch and does nothing when the condition fails.

Answer: A

Correct answer: EXEC statement

A COMAL procedure is called with EXEC name. PROC introduces the definition rather than invoking it, which is the distinction the question tests.