# 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.

Below is the List of C Programming Questions for Practice.

## List of C Programming Questions and Answers by Categories.

• Simple
• If / Else Statement
• Loops
• While loop or While-Do loop
• Do-While loop
• For Loop
• Switch Case
• Arrays
• Matrix
• String
• Function
• Pointer
• File Handling
• Sorting
• Bubble Sort
• Shell Sort
• Merge Sort
• Heap Sort
• Selection Sort
• Insertion Sort
• Searching
• Binary Search
• Linear Search
• Recursive Binary Search
• Tricky Question for Expert Only | Legendary level
• Number Series
• StartPattern Printing
• Puzzles

### 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 Positive or Negative
• The Number Is Even or Odd
• Greatest of Two Numbers
• Greatest Among Three Numbers
• Leap Year
• 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

#### 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
• Calculator
• 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
• 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.

• 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.
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### 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.

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