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C Programming Questions and Answers PDF | C Language

Here is the list of the top 500 C Programming Questions and Answers. Download C Programming Questions PDF free with Solutions. All solutions are in C language. All the solutions have 4 basic parts programming problems, logic & explanation of code, programming solutions code, and the output of the program.

To summarize our programming questions list does not contain only answers In addition, it also contains all the aspects of the problem, if any programming questions have multiple solutions then we try to add all possible solutions to the problem programming problem.

We also divide all the c programming questions into multiple levels. Levels are nothing but the complexity and toughness of programming questions. We have 5 levels, Newbie, Easy, Medium, Master, and Legendary . Therefore all the c programming questions are also separated into 14 categories. Download C Programming Questions and Answers PDF.

Table of Contents

Below is the List of C Programming Questions for Practice.

List of C Programming Questions and Answers by Categories.

• If / Else Statement
• While loop or While-Do loop
• Do-While loop
• Switch Case
• File Handling
• Bubble Sort
• Bucket or Radix Sort
• Selection Sort
• Insertion Sort
• Binary Search
• Linear Search
• Recursive Binary Search
• Number Series
• StartPattern Printing

Simple C Programming Questions and Answers List

• Area and Circumference of a Circle
• Print Ascii Value of the Character
• Area of Triangle
• Convert a Person’s Name into an Abbreviated
• Simple Interest
• Gross Salary of an Employee
• Percentage of 5 Subjects
• Converting Temperature Celsius into Fahrenheit
• The Display Size of the Different Datatype
• Factorial of a Given Number
• Read Integer (N) and Print the First Three Powers (N^1, N^2, N^3)
• Area of a Circle
• LCM of Two Numbers
• GCD of Two Numbers

If / Else Statement Questions and Answers

• The Greatest Number Among the Given Three Numbers
• The Number Is Positive or Negative
• Character Is Vowel or Consonant
• A Character Is an Alphabet or Not
• Uppercase, Lowercase, Special Character, or Digit
• The Number Is Even or Odd
• Greatest of Two Numbers
• Greatest Among Three Numbers
• The Date Is Correct or Not
• Voting Eligibility Checker
• Find the maximum between two numbers.
• Find the maximum between the three numbers.
• Check whether a number is negative, positive or zero.
• Check whether a number is divisible by 5 and 11 or not.
• Find whether a number is even or odd.
• Check whether a year is a leap year or not.
• Check whether a character is an alphabet or not.
• Input any alphabet and check whether it is a vowel or consonant.
• Input any character and check whether it is the alphabet, digit or special character.
• Check whether a character is an uppercase or lowercase alphabet.
• Input the week number and print the weekday.
• Input the month number and print the number of days in that month.
• Count the total number of notes in a given amount.
• Input the angles of a triangle and check whether the triangle is valid or not.
• Input all sides of a triangle and check whether the triangle is valid or not.
• Check whether the triangle is equilateral, isosceles or scalene.
• Find all roots of a quadratic equation.
• Calculate profit or loss.

Loops- List of C Programming Questions and Answers

While loop or while-do loop questions list.

• Reverse A given Number
• Find Number Is Armstrong Or Not
• Calculate the Sum of Natural Numbers
• Display Fibonacci Series
• Find the LCM of two Numbers
• Reverse a Number
• Check Whether a Number is A Palindrome or Not
• Count the Number of Digits of an Integer
• Find A Generic Root Of the Number
• Print A Calendar Taking Input From User Using Loop
• Number Is Divisible By 11 Using (VEDIC MATH)
• Denomination of an Amount

Do-While Loop Questions List

For loop questions list.

• Generate IP (Internet Protocol) Addresses Using
• Print Multiplication Table Using
• Sort A Float Array In Ascending And Descending Order Using
• Find the GCD of two Numbers Using

Switch Case- C Programming Questions and Answers List

• Temperature Conversion Celcius To Fahrenheit And Vice Versa
• Find The Day
• Find A Grade Of Given Marks or ( Find a Grade of Given Marks Using Switch Case )
• Find the Radius, Circumference and Volume of the Cylinder
• Remove All Vowels From A String
• Print the day of the week name using a switch case.
• Print the total number of days in a month using a switch case.
• Check whether an alphabet is a vowel or consonant using a switch case.
• Find the maximum between two numbers using a switch case.
• Check whether a number is even or odd using a switch case.
• Check whether a number is positive, negative or zero using a switch case.
• Find the roots of a quadratic equation using a switch case.
• Create a Simple Calculator using a switch case.

Array Questions List

• Insert An Element Desired or Specific Position In An Array
• Remove Duplicates Items In An Array
• Delete Element From Array At Desired Or Specific Position
• Print “I AM IDIOT” Instead Of Your Name Using Array
• Check String Is Palindrome Or Not Using For Loop
• Convert All Input String Simultaneously Into Asterisk ( * )
• Read and print elements of the array. – using recursion.
• Print all negative elements in an array.
• The sum of all array elements. – using recursion.
• Find a maximum and minimum element in an array. – using recursion.
• Get the second largest element in an array.
• Count the total number of even and odd elements in an array.
• Count the total number of negative elements in an array.
• Copy all elements from an array to another array.
• Insert an element in an array.
• Delete an element from an array at the specified position.
• Count the frequency of each element in an array.
• Print all unique elements in the array.
• Count the total number of duplicate elements in an array.
• Delete all duplicate elements from an array.
• Merge two arrays to the third array.
• Find the reverse of an array.
• Put even and odd elements of an array in two separate arrays.
• Search an element in an array.
• Sort array elements in ascending or descending order.
• Sort even and odd elements of the array separately.
• Left rotate an array.
• Right-rotate an array.

Matrix Questions- Download C Programming Questions and Answers

• Add two matrices.
• Subtract two matrices.
• Perform scalar matrix multiplication.
• Multiply two matrices.
• Check whether the two matrices are equal or not.
• SUM of the main diagonal elements of a matrix.
• Find the sum of minor diagonal elements of a matrix.
• Find the sum of each row and column of a matrix.
• Interchange diagonals of a matrix.
• The upper triangular matrix.
• Find a lower triangular matrix.
• SUM of the upper triangular matrix.
• Find the sum of a lower triangular matrix.
• The transpose of a matrix.
• Find the determinant of a matrix.
• Identity matrix in C.
• Check the sparse matrix.
• Check the symmetric matrix.
• Recommended posts

String Questions List

String C Programming Questions and Answers.

• String Char-Case Change
• A String is Palindrome or Not
• A String Is an Anagram or Not
• Find the length of a string.
• Copy one string to another string.
• Concatenate two strings.
• Compare two strings.
• Convert lowercase string to uppercase.
• Convert uppercase string to lowercase.
• Toggle the case of each character of a string.
• Find the total number of alphabets, digits or special characters in a string.
• Count the total number of vowels and consonants in a string.
• Count the total number of words in a string.
• Find the reverse of a string.
• Check whether a string is a palindrome or not.
• Reverse the order of words in a given string.

String Questions List: Level Up

• Find the first occurrence of a character in a given string.
• Find the last occurrence of a character in a given string.
• Search all occurrences of a character in a given string.
• Count occurrences of a character in a given string.
• Find the highest frequency character in a string.
• Find the lowest frequency character in a string.
• Count the frequency of each character in a string.
• Remove the first occurrence of a character from a string.
• Remove the last occurrence of a character from a string.
• Delete all occurrences of a character from a string.
• Remove all repeated characters from a given string.
• Replace the first occurrence of a character with another in a string.
• Replace the last occurrence of a character with another in a string.
• Put all occurrences of a character with another in a string.
• Find the first occurrence of a word in a given string.
• Find the last occurrence of a word in a given string.
• Search all occurrences of a word in a given string.
• Count occurrences of a word in a given string.
• Remove the first occurrence of a word from a string.
• Remove the last occurrence of a word in a given string.
• Delete all occurrences of a word in a given string.
• A Trim leading white space characters from a given string.
• Trim trailing white space characters from a given string.
• Trim both leading and trailing white space characters from a given string.
• Remove all extra blank spaces from the given string.

Function Questions List

• Cube of any number using the function.
• Find the diameter, circumference and area of a circle using functions.
• Maximum and minimum between two numbers using functions.
• Check whether a number is even or odd using functions.
• Check whether a number is a prime, Armstrong or perfect number using functions.
• Find all prime numbers between the given interval using functions.
• Print all strong numbers between the given interval using functions.
• Armstrong numbers between the given interval using functions.
• Print all perfect numbers between the given interval using functions.
• Find the power of any number using recursion.
• Print all natural numbers between 1 to n using recursion.
• Print all even or odd numbers in a given range using recursion.
• The sum of all natural numbers between 1 to n using recursion.
• Find the sum of all even or odd numbers in a given range using recursion.
• Find the reverse of any number using recursion.
• Check whether a number is a palindrome or not using recursion.
• Find the sum of digits of a given number using recursion.
• Find the factorial of any number using recursion.
• Generate nth Fibonacci term using recursion.
• Find the GCD (HCF) of two numbers using recursion.
• Find the LCM of two numbers using recursion.
• Display all array elements using recursion.
• Find the sum of elements of the array using recursion.
• Find maximum and minimum elements in an array using recursion.
• Stricmp() Function (Case In-Sensitive Compare)
• strncat() Function (String Concatenate)
• Strstr() Function (Sub-String)
• Strlwr() Function (To Lower-Case)
• Strupr() Function (To Upper-Case)
• Strncmp() Compare & Chars
• strncpy() Copy N Chars
• Strrev() String Reverse
• Strlen() String Length
• Strcat() String Concatenate
• Strcmp() String Compare
• Strcpy() Copy the String

Pointer Questions List in C Language

• Add two numbers using pointers.
• Swap two numbers using pointers.
• Input and print array elements using a pointer.
• Copy one array to another using pointer.
• Swap two arrays using pointers.
• Reverse an array using pointers.
• Search an element in an array using pointers.
• Access two-dimensional array using pointers.
• Add two matrices using pointers.
• Multiply two matrices using pointers.
• Find the length of the string using pointers.
• In short How to Copy one string to another using pointer.
• Concatenate two strings using pointers.
• Compare two strings using pointers.
• Find the reverse of a string using pointers.
• Sort array using pointers.
• Return multiple values from a function using pointers.

File Handling- Programming Questions and Answers in C Language

• Create a file and write contents, save and close the file.
• Read file contents and display them on the console.
• Read numbers from a file and write even, odd and prime numbers to separate files.
• Append content to a file.
• Compare two files.
• How to Copy contents from one file to another file.
• Merge two files into the third file.
• Count characters, words and lines in a text file.
• Delete a word from a text file.
• Remove the specific line from a text file.
• Remove empty lines from a text file.
• Find the occurrence of a word in a text file.
• Count occurrences of a word in a text file.
• Count occurrences of all words in a text file.
• Find and replace a word in a text file.
• Replace a specific line in a text file.
• Print the source code of the same program.
• Convert uppercase to the lowercase character and vice versa in a text file.
• Find properties of a file using the stat() function.
• Check if a file or directory exists.
• Rename a file using rename() function.
• List all files and sub-directories recursively.

Sorting in C Language

• Bubble Sort in C
• Bucket or Radix Sort in C
• Shell Sort in C
• Merge Sort in C
• Heap Sort in C
• Selection Sort in C
• Insertion Sort in C

Searching in C Language

• Binary Search in C
• Linear Search in C
• Recursive Binary Search in C

Tricky Questions for Expert Only | Legendary level

This is a high-level section for legendary programmers or thinkers, this section can help you to become a pro programmer. In this section, two categories are the number pattern and the start pattern. I just keep the pattern programming and number programming separate. All the tricky questions or we can say that number programming or start pattern programming solutions of c programming questions and answers are below.

• Number Series- Questions and Answers
• Start Pattern Printing- C Programming Questions and Answers
• Puzzles Questions

Puzzles Questions list

• Print numbers from 1 to N without using a semicolon.
• The sum of two numbers without using any operator
• How to show the memory representation of c variables?
• Condition to print “HelloWorld”
• Modify/add only one character and print ‘*’ exactly 20 times
• Sum the digits of a given number in a single statement.

Hacker Rank 30 Days of Code Solution.

99+ C Programming Questions and Answers PDF Check Here .

• Basics of Input/Output
• Time and Space Complexity
• Basics of Implementation
• Basics of Operators
• Basics of Bit Manipulation
• Recursion and Backtracking
• Multi-dimensional
• Basics of Stacks
• Basics of Queues
• Basics of Hash Tables
• Singly Linked List
• Binary/ N-ary Trees
• Binary Search Tree
• Heaps/Priority Queues
• Trie (Keyword Tree)
• Segment Trees
• Fenwick (Binary Indexed) Trees
• Suffix Trees
• Suffix Arrays
• Basics of Disjoint Data Structures
• Linear Search
• Binary Search
• Ternary Search
• Bubble Sort
• Selection Sort
• Insertion Sort
• Counting Sort
• Bucket Sort
• Basics of Greedy Algorithms
• Graph Representation
• Breadth First Search
• Depth First Search
• Minimum Spanning Tree
• Shortest Path Algorithms
• Flood-fill Algorithm
• Articulation Points and Bridges
• Biconnected Components
• Strongly Connected Components
• Topological Sort
• Hamiltonian Path
• Maximum flow
• Minimum Cost Maximum Flow
• Basics of String Manipulation
• String Searching
• Z Algorithm
• Manachar’s Algorithm
• Introduction to Dynamic Programming 1
• 2 Dimensional
• State space reduction
• Dynamic Programming and Bit Masking
• Basic Number Theory-1
• Basic Number Theory-2
• Primality Tests
• Totient Function
• Basics of Combinatorics
• Inclusion-Exclusion
• Line Sweep Technique
• Line Intersection using Bentley Ottmann Algorithm
• Basic Probability Models and Rules
• Bayes’ rules, Conditional probability, Chain rule
• Discrete Random Variables
• Continuous Random Variables
• Practical Tutorial on Data Manipulation with Numpy and Pandas in Python
• Beginners Guide to Regression Analysis and Plot Interpretations
• Practical Guide to Logistic Regression Analysis in R
• Practical Tutorial on Random Forest and Parameter Tuning in R
• Practical Guide to Clustering Algorithms & Evaluation in R
• Beginners Tutorial on XGBoost and Parameter Tuning in R
• Deep Learning & Parameter Tuning with MXnet, H2o Package in R
• Decision Tree
• Simple Tutorial on Regular Expressions and String Manipulations in R
• Practical Guide to Text Mining and Feature Engineering in R
• Winning Tips on Machine Learning Competitions by Kazanova, Current Kaggle #3
• Practical Machine Learning Project in Python on House Prices Data
• Challenge #1 - Machine Learning
• Challenge #3 - Machine Learning
• Challenge #2 - Deep Learning
• Transfer Learning Introduction
• Input and Output
• Python Variables
• Conditionals
• Expressions
• Classes and Objects I
• Classes and Objects II (Inheritance and Composition)
• Errors and Exceptions
• Iterators and Generators
• Functional Programming
• Higher Order Functions and Decorators
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Programming Fundamentals MCQ Quiz Questions And Answers

Do you consider yourself a programmer? Do you know everything about programming fundamentals? Then take our brain-wracking programming fundamentals quiz and evaluate yourself. Programming can be defined as the art and science of translating an algorithm and encoding it into a script programmer. Algorithms are crucial in any programming that finds a solution to the problem. Let's start this MCQ quiz and see how much you know about this field. All the best!

Programming Fundamentals Questions and Answers

Which of the following is not a type of algorithm.

Decision Table

Rate this question:

The symbol that represents comments in a flowchart is

A procedure symbol

An annotation symbol

A flow line

A subroutine

The part of a decision table in which all the conditions, based on which a decision is made are written is:

Condition Applied

Condition Stub

Action Taken

Action Stub

In a flowchart the symbol that represents a condition based on which a decision should be made is

Which symbol on a flowchart is used to represent the connection between the portions of a flowchart on separate pages.

Off-Page Connector

On-Page Connector

Which of the following statements is False?

The flowchart should be clear, precise and easy to follow

The input, process, output, and display symbols should have only one flow line.

Flowcharts can have only one start point and one endpoint

The start and stop symbols should have only a single flow line

In a flowchart all the necessary inputs should be listed out in a logical order

Which of the following statements is true?

Pseudocode helps in understanding the logic better when compared to flowcharts

The flowcharts do not act as a guide during the program development phase

Flowcharts are a better method of communicating logic than pseudocode and decision tables

Flowcharts are a better technique to use in case of complex conditions compared to decision tables

____________ represent algorithms that involve complex decision-making.

Decision Tables

What are the four components of a Decision Table? (Choose all that apply)

Action Applied

The accept keyword in a pseudocode is similar to the _____________ symbol in a flowchart.

How would you declare a variable to store the gender of a person.

Character n Gender

String sGender

Character cGender

Numeric nGender

A nAge variable is declared to store the age of a person. How would you intialize the variable to 25? (Choose all that apply)

Display "Enter the age" Accept nAge

Set nAge to 25

A variable used to store the name of customers is to be declared. Which of the following declares the variable and intializes it to Tom? (Choose all that apply)

String nName = Tom

String nName = "Tom"

Character nName = Tom

Character nName = "Tom"

Character nName = 'Tom'

Which of the following is/are valid variable name/s? (Choose all that apply)

NBasic Salary

NBasicSalary

NBasic.Salary

NBasic_Salary

Basic Salary

Indicate whether the following statements are true or false. Statement 1: A variable needs to be declared before being used in a program Statement 2: A variable can be used without being initialized.

Statement 1 is false and Statement 2 is true

Both statements are false

Statement 1 is True and Statement 2 is false

Both statements are true

In the following expression z = x + y x and y are called:

Study the following pseudocode. begin numeric nnum1, nnum2, nnum3 nnum1 = 20 nnum2 = 4 nnum3 = nnum1 % nnum2 display nnum end what will be the output, which operators are used to test the relationship between two variables or between a variable and a constant.

Arithmetic operators

Logical operators

Relational operators

Special operators

Which of the following is a logical operator?

If an expression contains an addition operator, a less than operator, and a subtraction operator, which operator has a higher priority when evaluating the expression.

Addition operator

Subtraction operator

Less than operator

All the three operators

Which of the following is/are relational operators? (Choose all that apply)

If x=2 not x=3 will result in:, which operator has the highest precedence level, what is the result of the following pseudocode begin numeric nnum1, nnum2, nnum3, nresult nnum1 = 8 nnum2 = 9 nnum3 = 10 nresult = nnum1+nnum2*nnum3/45+15 display nresult end, what are the values of nnum1 and nnum2 after the following program executes begin numeric nnum1=2 numeric nnum2=3 numeric nswap nswap = nnum1 nnum1 = num2 nnum2 = num1 end.

NNum1 = 2, nNum2 = 3

NNum1 = 3, nNum2 = 3

NNum1 = 3, nNum2 = 2

NNum1 = 2, nNum2 = 2

If 6 and 4 were entered respectively for number 1 and number 2 then what will be displayed when the following program executes? begin numeric nNum1, nNum2, nResult display “Enter number1 and number2 accept nNum1 accept nNum2 nResult = nNum1 + nNum2 if(nResult % 2 = 0) begin display “The result is even” end else begin display “The result is odd” end end

The result is even

The result is odd

Nothing is displayed

Is the following statement true or false? Statement: if constructs and switch...case constructs are decision-making constructs

Is the following statement true or false statement: the switch construct consists one case statement, a number of switch instructs, and a default statement.

Quiz Review Timeline +

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• Mar 26, 2024 Quiz Edited by ProProfs Editorial Team Expert Reviewed by Godwin Iheuwa
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Steps in Problem Solving Multiple Choice Questions (MCQ) PDF Download

Steps in Problem Solving Multiple Choice Questions (MCQ Quiz) with Answers PDF Download (Steps in Problem Solving MCQ PDF Book) to learn online computer fundamentals degree courses. Study Using Computers to Solve Problems Multiple Choice Questions and Answers (MCQs) , Steps in Problem Solving quiz answers PDF for online computer science degrees. Free learning app: Steps in Problem Solving MCQ App Download & e-Book for representing algorithms flowcharts and structure diagram, steps in systems analysis and design, computer systems, program design and implementation test prep to learn online certificate courses.

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MCQ 2 : Second step in problem solving process is to

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MCQ 4 : First step in process of problem solving is to

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Pseudo Code Solved MCQs

• Flow Charts
• Designing Flowcharts
• Pseudo Code
• Numeric Types (Int,Float)
• Precedence of Operators
• Bitwise Operator

Done Reading?

1000+ Problem Solving MCQ Questions and Answers - 1

• engineering-questions

Question: 1

The maximum length of the data variable can hold is called

(A) header file

(B) length of a variable

(C) field width of a variable

(D) width of a variable

field width of a variable

Question: 2

The program created with the help of an editor is called

(A) source program or source code

(B) linking

(C) source program

(D) object program

source program or source code

Question: 3

Which of the following is easier to be transformed into a computer program?

(A) algorithm

(B) flow chart

(C) pseudo code

(D) none of these

pseudo code

Question: 4

The function printf() is used to print any combination of

(A) character

(C) string, number and character

string, number and character

Question: 5

The use of structure tags allow the structure to be

(A) separate from the constant declaration

(B) separate from the constant declaration

(C) separate from the variable declaration

(D) with the variable declaration

separate from the variable declaration

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50 Java Language MCQs with Answers

What is the use of final keyword in Java?

See final in Java .

Which of the following is FALSE about arrays in Java?

In Java, arrays are objects, they have members like length. The length member is final and cannot be changed. All objects are allocated on heap in Java, so arrays are also allocated on heap.

Which of the following is true about interfaces in java.

Answer: (A)   Explanation: The instance of an interface can't be created because it acts as an abstract class. Quiz of this Question

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