TCS Technical Questions Computer Science

TCS C MCQ Syllabus Detailed

TCS Computer Science Sections based Syllabus and Written Paper Pattern

  • No Of Questions:- 10 (7+3 Star Marked) TCS Questions
  • Time – 15 mins

TCS Technical Question Papers – C Language Part 1

  1. Data Types
  2. Functions and Scope
  3. Recursion and Iteration
  4. File Handling
  5. Array
  6. Variables and Registers
  7. Loops
  8. Command Line Arguments
  9. Input and Output

TCS Computer Science Papers – C Language Part 2

  1. OOPS
  2. Stacks and Queue
  3. Linked List
  4. Trees
  5. Graphs
  6. Dynamic Programming and Greedy
  7. Hashing
  8. Searching and Sorting
  9. Time Complexity
  10.  Miscellaneous

TCS C-MCQ Section details

Here below you will get TCS previous year similar pattern Technical MCQ Questions that will help you in preparation.
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1. In C language, if a function return type is not explicitly defined then it defaults to what data type ?

void

void

62.86%

int

int

32.53%

dobule

dobule

3.46%

float

float

1.15%

Answer :: (B)

EXPLANATION :

The default return value of main() in c is 0. This is because by default the data type of main() is int and it cannot be left without any return value.

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2. Which of the following is true for binary tree ?

A node can have a single child also.

A node can have a single child also.

24.93%

 It must have two child only

 It must have two child only

22.16%

Each node has exactly zero or two children.

Each node has exactly zero or two children.

38.65%

All the leaves are at the same level.

All the leaves are at the same level.

14.25%

Answer :: (C)

EXPLANATION :

A full binary tree is a tree in which each node has exactly 0 or 2 children.

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3. To get the most accurate value we prefer the data type ?

double

double

39.52%

float

float

23.36%

int

int

21.59%

long int

long int

15.53%

Answer :: (A)

EXPLANATION:

The double data type has more precision as compared to the three other data types. This data type has more digits towards the right of decimal points as compared to other data types.

 

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4. 

main(int argc,char*argv[])

In the above Definition of main function the variable argv denotes ?

An array of character pointer each pointing to the command line parameters.

An array of character pointer each pointing to the command line parameters.

23.17%

An array of character pointers the first array item pointing to the program name and remaining pointing to the command line parameters.

An array of character pointers the first array item pointing to the program name and remaining pointing to the command line parameters.

37.82%

A pointer to pointer that points to the memory location where the program has been loaded to the memory.

A pointer to pointer that points to the memory location where the program has been loaded to the memory.

18.91%

An array of character pointer each pointing to the command line parameters.

An array of character pointer each pointing to the command line parameters.

20.1%

Answer :: (B)

EXPLANATION :

The parameters to main represent the command line parameters provided to the program when it was started. The argc parameter represents the number of command line arguments, and char *argv[] is an array of strings (character pointers) representing the individual arguments provided on the command line.

 

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5. What will be the output of the following ?

#include <stdio.h> 

int main()

{

  int n,ch, for(n=7;n!=0;n–)

  printf(“n=%d”,n–) 

  ch=getchar(); 

  return 0;

}

Infinite loop

Infinite loop

21.43%

Numbers 7 to 0 in descending order.

Numbers 7 to 0 in descending order.

19.81%

Numbers 7 to 1 in ascending order.

Numbers 7 to 1 in ascending order.

17.05%

None of the other choices as there is a compilation error.

None of the other choices as there is a compilation error.

41.72%

Answer :: (A)

EXPLANATION :

The above program goes in infinite loop because the value of n (n != 0) never goes to zero.

 

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6.

Considering a hash table with 100 slots. Collisions are resolved using chaining. Assuming simple uniform hashing, what is the probability that the first 3 slots are unfilled after the first 3 insertions? (NOTE:100 ^ 3 means 100 raised to the power 3) ?

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.6712673.

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.6712673.

27%

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.412673.

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.412673.

25.82%

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.912673.

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.912673.

32.34%

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.922373.

The probability that the first 3 slots are unfilled after the first 3 insertions is 0.922373.

14.84%

Answer :: (C)

EXPLANATION :

Step-by-step explanation:

 

Given : Considering a hash table with 100 slots. Collisions are resolved using chaining. Assuming simple uniform hashing.

 

To find : What is the probability that the first 3 slots are unfilled after the first 3 insertions?

Solution :

Each item hashed has an equal probability of being placed into a slot.

Probability that first item does not go in any of the first 3 slots is given by,

Probability that second item does not go in any of the first 3 slots is given by,

Probability that third item does not go in any of the first 3 slots is given by,

Probability that the first 3 slots are unfilled after the first 3 insertions is given by,

Therefore, The probability that the first 3 slots are unfilled after the first 3 insertions is 0.912673.

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Detailed Analysis of TCS C MCQ Section

Stats about CMCQ

Number of Questions 100%
Cut-off 100%
Difficulty 80%

Topic Wise Analytics

Data Types
Questions 0 - 1
Diificulty 40%
Importance 50%
Functions and Scope
Questions 0-1
Diificulty 60%
Importance 70%
Recursion Iteration Variables
Questions 0-1
Diificulty 60%
Importance 80%
File Handling
Questions 0-1
Diificulty 60%
Importance 70%
Array
Questions 1 - 2
Diificulty 85%
Importance 90%
Variables and registers
Questions 0-1
Diificulty 40%
Importance 50%
Loops
Questions 1-2
Diificulty 60%
Importance 80%
OOPS
Questions 0-1
Diificulty 60%
Importance 45%
I/O
Questions 0-1
Diificulty 40%
Importance 50%
Command Line Arguments
Questions 0-1
Diificulty 80%
Importance 60%
Dynamic Programming and Greedy Algorithm
Questions 0-2
Diificulty 85%
Importance 70%
Stack and Queue
Questions 0-1
Diificulty 85%
Importance 80%
Linked List
Questions 0-1
Diificulty 80%
Importance 85%
Trees
Questions 0-2
Diificulty 85%
Importance 70%
Graphs
Questions 0-2
Diificulty 88%
Importance 80%

TCS C Programming MCQ Detailed Pattern 2022:-

Topics Questions in Test Difficulty
Data Types 0 - 1 Low
Functions and Scope 0-1 Medium
Recursion Iteration Variables 1 Medium
File Handling 0-1 Medium
Array 1 - 2 High
Variables and registers 0-1 Low
Loops 1 Medium
Polymorphism 0-1 Medium
Abstraction 1 Low
Command Line Arguments 1 High
Dynamic Programming and Greedy Algorithm 1 High
Stack and Queue 0-1 High
Linked List 0-1 High
Trees 0-1 High
Graphs 0-1 High

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One comment on “TCS Technical Questions Computer Science”

December 22, 2023