TCS Recursion and Iteration Questions Quiz-1

Question 1

Time: 00:00:00

function main() { integer a=5,b=7 switch(a) { case 5 :print "I am 5" break case b:print "I am not 5" break default:print "I am different" } }

I am 5

I am not 5

I am different

Error

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In function ‘main’: main.c:19:9: error: case label does not reduce to an integer constant case b:

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we can not use integer constant (b variable here) with switch

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There is no data type like function...and we can not use int data type as integer...so this will get an error

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Case label does not reduce to an integer constant

Question 2

Time: 00:00:00

Ashima wants to print a pattern which includes checking and changing a variables value iteratively She decides to use a loop/condition Which of the following options should she use such that the body of the loop/condition is executed atleast once whether the variable satisfies the entering condition or not?

For loop

While Loop

Do while loop

Switch case

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Question 3

Time: 00:00:00

The construct “if (condition) then A else B” is for which of the following purposes?

Iteration

Decision Making

Recursion

Object Oriented Programming

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Question 4

Time: 00:00:00

Ravi and Rupali are asked to write a program to sum the rows of 2X2 matrices stored in the array A.
Ravi writes the following code (Code A):
for n = 0 to 1
sumRow1[n] = A[n][1] + A[n][2]
end
Rupali writes the following code (Code B):
sumRow1[0] = A[0][1] + A[0][2]
sumRow1[1] = A[1][1] + A[1][2]
Comment upon these codes (Assume no loop unrolling done by compiler):

Code A will execute faster than Code B

Code B will execute faster than Code A

Code A is logically incorrect.

Code B is logically incorrect.

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Question 5

Time: 00:00:00

Integer a =40, b =35, c=20, d =10
Comment about the output of the following two statements •

Print a*b/c-d

Print a*b/(c-d)

Comment about the output of the following two statements

Differ by 80

Same

Differ by 50

Differ by 160

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Option 1is correct ...differ by 80 60 140

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Differ by 80

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a*b/c-d=60 {b/c=>35/20=1.75,a*b/c=>40*1.75=70,70-d=>60} a*b/(c-d)=140 {(c-d)=>10,b/(c-d)=3.5,a*3.5=>140} Difference=140-60=>80

Question 6

Time: 00:00:00

What is the output of the following pseudo code?

Int a =456,b,c,d=10;
b=a/d;
c=a-b;
print c;

411

410

456

none of these

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Incorrect Options

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incorrect options

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Prints c value as 411

Question 7

Time: 00:00:00

Function main()
{
Integer i=0.7
Static float m=0.7
If(m equals i)
Print(“We are equal”)
Else If(m>i)
Print(“I am greater”)
Else
Print(“I am lesser”)

We are equal

I am greater

I am lesser

This code will generate an error

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The answer will be \"I am greater\", when defining i as int, it automatically converts it into and integer of a lesser value, hence i=0. Try the same code in any compiler