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Published on: 13/05/2022
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Questions + Answers key
Take MCQ Computer Science Test
2 Marks
1.
What is a subroutine?
2.
Define Function with respect to Programming language.
3.
Write the inference you get from X : = (78).
4.
Differentiate interface and implementation.
5.
Which of the following is a normal function definition and which is recursive function definition
i) let rec sum x y:
return x + y
ii) let disp:
print ‘welcome’
iii) let rec sum num:
if (num!=0) then return num + sum (num-1)
else
return num
2 Marks
1.
(i) Subroutines are the basic building blocks of computer programs. Subroutines are small sections of code that are used to perform a particular task that can be used repeatedly.
(ii) In Programming languages these subroutines are called as Functions.
2.
A function is a unit of code that is often defined within a greater code structure. Specifically, a function contains a set of code that works on many kinds of inputs, like variables, expressions and produces a concrete output.
3.
X: = (78) has an expression in it but (78) is not itself an expression. Rather, it is a function definition. Definitions bind values to names, in this case the value 78 being bound to the name 'X'.
4.
| Interface | Implementation |
|---|---|
| Interface just defines what an object can do, but won't actually do it. | Implementation carriers out the instructions defined in the interface. |
5.
(i) Recursive function
(ii) Normal function
(iii) Recursive function
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
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