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91+ Most Asked C Coding Questions In Interview

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Coding Question in C on Numbers

  1. C Program to Reverse Given Number with explanation
  2. C Program to Check a Given Number is an Armstrong or not
  3. Prime number program in C with explanation
  4. Fibonacci series program in C using iteration.
  5. Fibonacci series program in C using recursive method
  6. Palindrome Program in C using the iterative method
  7. Palindrome Program in C using recursive method
  8. C Program to find Greatest number among three
  9. C program to check the given number format is in binary or not.
  10. C Program to find sum of number digit using recursion
  11. C Program to swap two number without third variable
  12. C program to swap two numbers using third variable
  13. C Program to Find Prime factors of a given number
  14. C Program to add two numbers without addition operator
  15. C Program to check given number is Perfect or not
  16. C Program to find the Average of numbers with explanations
  17. C Program to find factorial using iterative method
  18. C Program to calculate factorial using recursion
  19. C Program to check given number is even or odd
  20. C Program to Print first n Prime Number with explanation
  21. C Program to print Prime Number in a given range
  22. C Program to find Smallest number among three
  23. C program to calculate the power using the POW method
  24. C Program to calculate the power without using POW function
  25. C Program to calculate the square of a given number
  26. C Program to calculate the cube of a given number
  27. C Program to calculate the square root of a given number
  28. C program to calculate LCM of given two numbers
  29. C Program to find GCD or HCF of two numbers
  30. C Program to find GCD of two numbers using recursion
  31. C Program to Convert Decimal Number into Binary
  32. C Program to convert Decimal number to Octal number
  33. C Program to check the given year is a leap year or not
  34. C Program to convert Celsius to Fahrenheit
  35. C Program to convert Fahrenheit to Celsius
  36. C program to calculate Simple Interest with explanation

C Coding Interview Questions on String

  1. C program to remove given character from string
  2. C program to count the occurrences of a character in a string
  3. Anagram program in C with explanation
  4. C Program to check given String is palindrome or not
  5. C Program to check given character is vowel or consonant
  6. C program to check given character is digit or not
  7. C program to replace the string space with a given character
  8. C Program to convert lowercase char to uppercase of string
  9. C program to convert lowercase vowel to uppercase in string
  10. C program to delete vowels in a given string
  11. C program to count Occurrence Of Vowels & Consonants In A String
  12. C program to print the highest frequency character in a String
  13. C Program to Replace First Occurrence Of Vowel With ‘-‘ in String
  14. C program to count alphabets, digits and special characters
  15. C Program to separate characters in a given String
  16. C program to check given two string are equal or not
  17. C program to concatenate two strings
  18. C program to remove repeated character from string
  19. C program to calculate sum of integers in string
  20. C program to print all non repeating character in String
  21. C program to copy one string to another string
  22. C Program to Sort Characters of string
  23. C Program to sort character of string in descending order

Coding Questions in C on Array

  1. C Program to find a missing number in an array of 1 to 100
  2. C program to print duplicate elements with frequency in array
  3. C program to print first duplicate number in array 1-100.
  4. C Program to remove duplicate elements in an Array
  5. C Program to find which number is not present in second array
  6. C program to check two arrays is equal in size or not
  7. C program to find the largest and smallest number in an array
  8. C program to find second largest number in an array
  9. C program to find first two largest elements of an array
  10. C program to print array in reverse Order
  11. C program to reverse an Array in two ways
  12. C Program to Calculate length of an array
  13. C Program to insert an element at end of an Array
  14. C program to insert element at a given location in Array
  15. C Program to delete element at end of Array
  16. C Program to delete given element from array
  17. C Program to delete element from array at given index
  18. C Program to find sum of array elements
  19. C Program to print all even numbers in array
  20. C Program to print all odd numbers in array
  21. C program to perform left rotation of array elements by two positions
  22. C program to perform right rotation in array by 2 positions
  23. C Program to merge two arrays
  24. C Program to find highest frequency element in array
  25. C Program to add two number using recursion
  26. C Program to find sum of digit of number using recursion

C Coding Interview Questions on Linked List

  1. C program to reverse a linked list with explanation
  2. C program to print 3rd node from the end of linked list
  3. C program to find middle element of linked list in single pass
  4. Insertion in Singly linked list: Beginning and End
  5. C Program to perform Searching in a linked list
  6. Deleting a node in linked list: Beginning, End & Given location
  7. Reverse a Linked List in C with Explanation

C Interview Questions on Searching and Sorting

  1. Insertion sort program in C with explanation
  2. Bubble sort program in C with explanation
  3. Selection Sort: Algorithm, Program in C
  4. Quick Sort Algorithm with explanation
  5. Heap Sort Algorithm, Program Explanations with Examples
  6. Radix Sort: Algorithm, Program, Explanation and Examples

Other

  1. Find the Earliest Repeating Character in a String