1. Write a program to print "Hello, World!".

2. Write a program to add two integers.

3. Write a program to swap two numbers.

4. Write a program to find the size of int, float, double, and char in your system.

5. Write a program to calculate the sum of all even numbers from 1 to N.

6. Write a program to find the largest of three numbers.

7. Write a program to check if a number is positive, negative, or zero.

8. Write a program to check if a number is even or odd.

9. Write a program to find the factorial of a number.

10. Write a program to print the Fibonacci series up to N terms.

11. Write a program to reverse a number.

12. Write a program to check if a number is a palindrome.

13. Write a program to find the sum of digits of a number.

14. Write a program to find the GCD of two numbers.

15. Write a program to find the LCM of two numbers.

16. Write a program to check if a number is prime.

17. Write a program to print prime numbers between two intervals.

18. Write a program to check if a year is a leap year.

19. Write a program to print all ASCII values and their equivalent characters.

20. Write a program to find the power of a number.

21. Write a program to find the roots of a quadratic equation.

22. Write a program to calculate the area of a circle.

23. Write a program to calculate the area of a rectangle.

24. Write a program to calculate the area of a triangle.

25. Write a program to find the maximum element in an array.

26. Write a program to find the minimum element in an array.

27. Write a program to calculate the sum of elements in an array.

28. Write a program to find the average of elements in an array.

29. Write a program to find the second largest element in an array.

30. Write a program to count the number of even and odd elements in an array.

31. Write a program to copy all elements of one array into another array.

32. Write a program to merge two arrays.

33. Write a program to search an element in an array.

34. Write a program to sort an array in ascending order.

35. Write a program to sort an array in descending order.

36. Write a program to delete an element from an array.

37. Write a program to insert an element in an array.

38. Write a program to print the elements of a matrix.

39. Write a program to add two matrices.

40. Write a program to subtract two matrices.

41. Write a program to multiply two matrices.

42. Write a program to find the transpose of a matrix.

43. Write a program to find the sum of each row and each column of a matrix.

44. Write a program to find the trace of a matrix.

45. Write a program to find the determinant of a matrix.

46. Write a program to find the sum of the diagonal elements of a matrix.

47. Write a program to check if a matrix is symmetric.

48. Write a program to check if a matrix is an identity matrix.

49. Write a program to print the Pascal triangle.

50. Write a program to check if a string is a palindrome.

51. Write a program to find the length of a string.

52. Write a program to reverse a string.

53. Write a program to concatenate two strings.

54. Write a program to copy one string to another string.

55. Write a program to compare two strings.

56. Write a program to find the frequency of a character in a string.

57. Write a program to count the number of vowels and consonants in a string.

58. Write a program to count the number of words in a string.

59. Write a program to convert a string to uppercase.

60. Write a program to convert a string to lowercase.

61. Write a program to find the first occurrence of a character in a string.

62. Write a program to find the last occurrence of a character in a string.

63. Write a program to find the substring of a string.

64. Write a program to find the length of a string using pointers.

65. Write a program to swap two numbers using pointers.

66. Write a program to add two numbers using pointers.

67. Write a program to find the maximum element in an array using pointers.

68. Write a program to find the minimum element in an array using pointers.

69. Write a program to find the length of a string using recursion.

70. Write a program to find the factorial of a number using recursion.

71. Write a program to find the Fibonacci series using recursion.

72. Write a program to find the GCD of two numbers using recursion.

73. Write a program to find the power of a number using recursion.

74. Write a program to print all prime numbers between two intervals using functions.

75. Write a program to find the factorial of a number using functions.

76. Write a program to find the GCD of two numbers using functions.

77. Write a program to find the LCM of two numbers using functions.

78. Write a program to swap two numbers using functions.

79. Write a program to find the maximum element in an array using functions.

80. Write a program to find the minimum element in an array using functions.

81. Write a program to find the length of a string using functions.

82. Write a program to reverse a string using functions.

83. Write a program to concatenate two strings using functions.

84. Write a program to compare two strings using functions.

85. Write a program to find the frequency of a character in a string using functions.

86. Write a program to count the number of vowels and consonants in a string using functions.

87. Write a program to count the number of words in a string using functions.

88. Write a program to convert a string to uppercase using functions.

89. Write a program to convert a string to lowercase using functions.

90. Write a program to find the first occurrence of a character in a string using functions.

91. Write a program to find the last occurrence of a character in a string using functions.

92. Write a program to find the substring of a string using functions.

93. Write a program to print the elements of a matrix using functions.

94. Write a program to add two matrices using functions.

95. Write a program to subtract two matrices using functions.

96. Write a program to multiply two matrices using functions.

97. Write a program to find the transpose of a matrix using functions.

98. Write a program to find the sum of each row and each column of a matrix using functions.

99. Write a program to find the trace of a matrix using functions.

100. Write a program to find the determinant of a matrix using functions.