Programming language used to encourage logical thinking is classified as
Answer: A
Correct answer: LOGO
LOGO was designed by Papert for teaching, and its turtle graphics let a child see the consequence of each instruction immediately, which is what makes it a language for developing logical thinking. COBOL and Pascal were designed for business and for structured programming respectively.
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Statement which is treated as choice for a possible actions is classified as
Answer: A
Correct answer: case
A case statement lists several possible values and the action to take for each, so it selects one action out of many. A condition is what a case is tested against, not the statement itself.
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In line "750 INPUT NUM: PRINT 7.3*NUM*NUM+15" of a BASIC program, '7.3*NUM*NUM+15' is
Answer: B
Correct answer: an expression
7.3*NUM*NUM+15 combines constants, a variable and operators to produce a value, which is what an expression is. An exponent is a single power and an identifier is a name.
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LDA is used instead of LOAD ACCUMULATOR and can be classified as
Answer: B
Correct answer: mnemonics
LDA is a short, memorable code standing for the operation load accumulator. Such abbreviations are mnemonics - the word means an aid to memory - and they are what assembly language substitutes for binary operation codes.
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In line '400 IF NAMEINR ="***" THEN Average= Total Mark/N' of BASIC program, AVERAGE is considered as
Answer: A
Correct answer: real numbers
Average = Total Mark / N is a division, and a division of one integer by another rarely comes out whole, so the variable must be able to hold a fractional value. That is what a real type is for.
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Second component in algorithms is classified as
Answer: A
Correct answer: selection
The three constructs of structured programming come in order: sequence first, then selection - choosing between alternatives - and then repetition. Selection is what allows an algorithm to do more than one fixed thing.
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Explanations at right side of mnemonics and symbolic addresses are called
Answer: D
Correct answer: programmers comment
The notes written beside the instructions are put there by the person writing the program and ignored by the assembler, which is why they are programmer's comments. Neither the compiler nor the assembler writes anything there.
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In COMAL language programs, procedures are defined between
Answer: D
Correct answer: PROC and ENDPROC statements
A COMAL procedure begins with PROC name and ends with ENDPROC; everything between them is the body. EXEC is how a procedure is called, not how it is defined.
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General term use for self-contained small set of instructions is referred as
Answer: A
Correct answer: routine
Routine is the general word for a small self-contained set of instructions. Function, procedure and subroutine are particular kinds of routine, distinguished by whether they return a value and how they are called.
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Computer language based on machine code is classified as
Answer: B
Correct answer: low level programming language
A low level language works in the terms of the machine's own instruction set, with one statement corresponding closely to one machine instruction. High level languages deliberately move away from machine code towards the language of the problem.
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