Top 100 C Programs for Practice

Top 100 C Programs

This page lists the top 100 C programs every beginner and intermediate developer should practice. They cover:

• Basic input/output operations
• Control flow (if, switch, loops)
• Functions and recursion
• Arrays, strings, and matrices
• Pattern printing
• Pointers and structures
• Mathematical and logical problems

Each program helps you master C programming concepts and improve your logical thinking. Explore the full list below and click on each program to view its explanation and source code.

1. C Hello World Program
2. C Program - Print Your Own Name
3. C Program - Print an Integer Entered By the User
4. C Program - Add Two Numbers
5. C Program - Check Whether a Number is Prime or Not
6. C Program - Multiply two Floating-Point Numbers
7. C Program - Print the ASCII Value of a Character
8. C Program - Swap Two Numbers
9. C Program - Calculate Fahrenheit to Celsius
10. C Program - Find the Size of int, float, double, and char
11. C Program - Add Two Complex Numbers
12. C Program - Print Prime Numbers From 1 to N
13. C Program - Find Simple Interest
14. C Program - Find Compound Interest
15. C Program - Area And Perimeter Of Rectangle
16. C Program - Check Whether a Number is Positive, Negative, or Zero
17. C Program - Check Whether Number is Even or Odd
18. C Program - Check Whether a Character is Vowel or Consonant
19. C Program - Find Largest Number Among Three Numbers
20. C Program - Calculate Sum of Natural Numbers
21. C Program - Print Alphabets From A to Z Using Loop
22. C Program - Check Leap Year
23. C Program - Find Factorial of a Number
24. C Program - Make a Simple Calculator
25. C Program - Generate Multiplication Table
26. C Program - Print Fibonacci Series
27. C Program - Find LCM of Two Numbers
28. C Program - Check Armstrong Number
29. C Program - Display Armstrong Numbers Between 1 to 1000
30. C Program - Display Armstrong Number Between Two Intervals
31. C Program - Reverse a Number
32. C Program - Check Whether a Number is a Palindrome or Not
33. C Program - Display Prime Numbers Between Intervals
34. C Program - Check whether the input number is a Neon Number
35. C Program - Find All Factors of a Natural Number
36. C Program - Print Simple Pyramid Pattern
37. C Program - Print Given Triangle
38. C Program - Print 180 0 Rotation of Simple Pyramid
39. C Program - Print Inverted Pyramid
40. C Program - Print Number Pattern
41. C Program - Print Character Pattern
42. C Program - Print Hollow Star Pyramid
43. C Program - Print Pascal's Pattern Triangle Pyramid
44. C Program - Print Floyd's Pattern Triangle Pyramid
45. C Program - Check Prime Number By Creating a Function
46. C Program - Display Prime Numbers Between Two Intervals Using Functions
47. C Program - Find All Roots of a Quadratic Equation
48. C Program - Check Whether a Number can be Express as Sum of Two Prime Numbers
49. C Program - Find the Sum of Natural Numbers using Recursion
50. C Program - Calculate the Factorial of a Number Using Recursion
51. C Program - Find G.C.D Using Recursion
52. C Program - Calculate Power Using Recursion
53. C Program - Print a 2D Array
54. C Program - Find the Largest Element in an Array
55. C Program - Find the Maximum and Minimum in an Array
56. C Program - Search an Element in an Array (Binary search)
57. C Program - Calculate the Average of All the Elements Present in an Array
58. C Program - Sort an Array using Bubble Sort
59. C Program - Sort an Array using Merge Sort
60. C Program - Sort an Array Using Selection Sort
61. C Program - Sort an Array Using Insertion Sort
62. C Program - Sort the Elements of an Array in Descending Order
63. C Program - Sort the Elements of an Array in Ascending Order
64. C Program - Remove Duplicate Elements From a Sorted Array
65. C Program - Merge Two Arrays
66. C Program - Find Common Array Elements
67. C Program - Copy All the Elements of One Array to Another Array
68. C Program - Array Rotation
69. C Program - Sort the 2D Array Across Rows
70. C Program - Check Whether Two Matrices Are Equal or Not
71. C Program - Find the Transpose
72. C Program - Find the Determinant of a Matrix
73. C Program - Find the Normal and Trace
74. C Program - Add Two Matrices
75. C Program - Multiply Two Matrices
76. C Program - Print Boundary Elements of a Matrix
77. C Program - Rotate Matrix Elements
78. C Program - Compute the Sum of Diagonals of a Matrix
79. C Program - Interchange Elements of First and Last in a Matrix Across Rows
80. C Program - Add or Concatenate Two Strings
81. C Program - Add 2 Binary Strings
82. C Program - Get a Non-Repeating Character From the Given String
83. C Program - Check if the string is palindrome or not
84. C Program - Reverse an Array or String
85. C Program - Reverse a String Using Recursion
86. C Program - Find the Length of a String
87. C Program - Sort a String
88. C Program - Check For Pangram String
89. C Program - Print the First Letter of Each Word
90. C Program - Remove Leading Zeros
91. C Program - Compute Quotient and Remainder
92. C Program - Demonstrate the Working of Keyword long
93. C Program - Check Whether a Character is an Alphabet or not
94. C Program - Count Number of Digits in an Integer
95. C Program - Calculate the Power of a Number
96. C Program - Reverse a Sentence Using Recursion
97. C Program - Calculate Standard Deviation
98. C Program - Multiply two Matrices by Passing Matrix to a Function
99. C Program - Swap Numbers in Cyclic Order Using Call by Reference
100. C Program - Remove all Characters in a String Except Alphabets