Top 50 C Programs Asked in Interviews

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Top 50 C Programs Asked in Interviews 



 Objective of the post Top 50 C Programs Asked in Interviews is to provide beginners as well as professionals a ready reckoner of popular C programs. What are Top 50 C Programs Asked in Interviews? We have tried to enlist here Top 50 C Programs Asked in Interviews.





  1. Write a program to print Hello message


  2. Write a program to swap two numbers


  3. Write a program to swap two numbers without using third variable


  4. Write a program to calculate area of a circle


  5. Write a program to convert Fahrenheit temperature into Celsius


  6. Write a program calculate simple interest


  7. Write a program to calculate perimeter of a circle 


  8. Write a program to fine greater out of two number


  9. Write a program to find a number is even or odd  


  10. Write a program to find a number is prime or not


  11. Write a program to find a number is Armstrong or not


  12. Write a program to print roots of a quadratic equation 


  13. Write a program to find greatest out of three numbers


  14. Write a program to print table of a number


  15. Write a program to calculate factorial of a number


  16. Write a program to print first ten natural numbers


  17. Write a program to print first five odd  numbers


  18. Write a program to print prime numbers between 100 and 200


  19. Write a program to print Fibonacci sequence of n terms


  20. Write a program to sum the digits of a number


  21. Write a program to print first and last digits of a number


  22. Write a program to read a one dimensional array of 10 elements and print it in reverse order


  23. Write a program to search an element in a list of elements using  sequential search


  24. Write a program to count the number of occurrences of a character in a string


  25. Write a program to check whether the entered string is palindrome or not


  26. Write a program to search an element in a list of elements using binary search


  27. Write a program to sort a list of elements using bubble sort in ascending order


  28. Write a program to sort a list of elements using insertion sort in ascending order


  29. Write a program to sort a list of elements using selection sort in ascending order


  30. Write a program to sort a list of elements using quick sort sort in ascending order


  31. Write a program to sort a list of elements using heap sort in ascending order


  32. Write a program to sort a list of elements using radix sort in ascending order


  33. Write a program to print a two dimensional array in matrix form


  34. Write a program to print transpose of a matrix.


  35. Write a program to count number of zero elements of a two dimensional array of order 3x3


  36. Write a program to check whether the given two dimensional array of order 3x3 is upper diagonal or not


  37. Write a program to check whether the given two dimensional array of order 3x3 is lower diagonal or not


  38. Write a program to find the trace of a two dimensional array of order 3x3


  39. Write a program to print address of an element stored in memory


  40. Write a program to calculate factorial of a number using functions


  41. Write a program to calculate factorial of a number using recursive functions


  42. Write a program to print table of a number using functions


  43. Write a program to read a file from hard disk.


  44. Write a program to write a string “hello world” to a file


  45. Write a program to generate pascal pyramid


  46. Write a program to generate floyd pyramid


  47. Write a program to print the sum of the series

            1 + 2+ 3 …n terms 
  48.   Write a program to print the sum of the series
           1 + 3+5  …n terms
  49.    Write a program to print the sum of the series
           2+ 4 + 6 …n terms
  50.    Write a program to print the sum of the series
            1 -2+ 3-4 …n terms
Top 50 C Programs Asked in Interviews