📚 Programming Topics & Solutions

1. Print “Hello World”.
   [Filename - 0001_hello_world]
2. Calculate the sum of 3 numbers.
   [Filename - 0002_sum_of_three]
3. Find the average of 4 subject marks.
   [Filename - 0003_average_marks]
4. Read 2 numbers and swap them using a third temporary variable.
   [Filename - 0004_swap_with_temp]
5. Find the area of rectangle, square, triangle, parallelogram, rhombus, trapezium and circle and volume of sphere, cylinder, cone, cube and cuboid.
   [Filename - 0005_area_volume]
6. Find simple interest or compound interest and amount.
   [Filename - 0006_interest_calculator]
7. Display whether a number is positive or negative.
   [Filename - 0007_positive_negative]
8. Accept two unequal numbers and display the greater of the two numbers.
   [Filename - 0008_greater_number]
9. Accept two numbers and if two numbers are equal then find the sum otherwise, their product.
   [Filename - 0009_sum_or_product]
10. Check whether two angles are complementary, supplementary or neither.
    [Filename - 0010_angle_check]
11. Calculate the profit and profit percent or the loss and the loss percent on the given cost and selling prices.
    [Filename - 0011_profit_loss]
12. Print the natural numbers from 1 to (user defined number).
    [Filename - 0012_natural_numbers]
13. Print even numbers from 0 to (user defined number).
    [Filename - 0013_even_numbers]
14. Print numbers from (user defined number) to 1 in descending order.
    [Filename - 0014_descending_order]
15. Print multiplication table up to 12 of given number.
    [Filename - 0015_multiplication_table]
16. Accept a 3-digit number and print the sum of the first and second number and the product of first and last number.
    [Filename - 0016_digit_operations]
17. Print a 3 digit number in the reverse order.
    [Filename - 0017_reverse_number]
18. Accept any range of m and n and print all the odd numbers between them.
    [Filename - 0018_odd_in_range]
19. Accept any number and check if it is even or odd.
    [Filename - 0019_even_odd_check]
20. Accept any number and print whether the number is a prime number or not.
    [Filename - 0020_prime_check]
21. Read a name and display in a triangular pattern.
    [Filename - 0021_name_triangle]

    For example-  
    L  
    LA  
    LAN  
    LANGU  
    LANGUA  
    LANGUAG  
    LANGUAGE
    

22. Find the sum, difference, product of any 2 numbers.
    [Filename - 0022_basic_operations]
23. Swap 2 numbers without using a third variable.
    [Filename - 0023_swap_without_temp]
24. Find the perimeter of a square, rectangle, triangle, circle, parallelogram, trapezium.
    [Filename - 0024_perimeter]
25. Check if a person is eligible to vote or not.
    [Filename - 0025_voting_eligibility]
26. Check if a person is a child or an adult.
    [Filename - 0026_child_adult]
27. Write a calculator.
    [Filename - 0027_calculator]
28. Check if a number is divisible by 7 or 3.
    [Filename - 0028_divisibility_check]
29. Check if the number has 1, 2 or more digits.
    [Filename - 0029_digit_count_check]
30. Check if a number is a palindrome or not.
    [Filename - 0030_palindrome_number]
31. Check if an entered year is a leap year or not.
    [Filename - 0031_leap_year]
32. Check if a number is neon number or not. (The sum of the digits of its square equals the original number itself.) Eg - 9² -> 81 -> 8+1=9
    [Filename - 0032_neon_number]
33. Write a guessing game.
    [Filename - 0033_guessing_game]
34. Calculate a 10% discount if the amount is above 10000 else a discount of 7.5%. Display the discount received and the final billing amount to be paid.
    [Filename - 0034_discount_calculator]
35. Read three numbers and display the largest of the three numbers.
    [Filename - 0035_largest_of_three]
36. Read two numbers and display the smaller of the two.
    [Filename - 0036_smaller_of_two]
37. Read a number and a character. If the character is ‘S’ display the square of the number. If the character is ‘C’ then display the cube of the number.
    [Filename - 0037_square_cube]
38. Read two numbers. If both numbers are even then display their sum else display their difference.
    [Filename - 0038_even_sum_diff]
39. Read a character and check if the character is a vowel or a consonant.
    [Filename - 0039_vowel_consonant]
40. Read two numbers and a Boolean value. For Boolean true display the area and perimeter of a rectangle assuming the two numbers are the length and width. For a Boolean false calculate and display the sum and product of the two numbers.
    [Filename - 0040_boolean_operations]
41. Read two numbers and a character. If the character is ‘a’ check if the numbers are equal. If the character is ‘M’ check if the first number is divisible by 9. Otherwise find the product.
    [Filename - 0041_conditional_operations]
42. Check if a string is a palindrome or not.
    [Filename - 0042_palindrome_string]
43. Count the number of vowels in a string.
    [Filename - 0043_count_vowels]
44. Read a line, then count words and display the total number of words in the given line.
    [Filename - 0044_word_count]
45. Convert temperature from celsius to fahrenheit.
    [Filename - 0045_celsius_fahrenheit]
46. Convert dollars to rupee with current conversion rate (take from internet).
    [Filename - 0046_dollar_rupee]
47. Check if a character is uppercase or lowercase.
    [Filename - 0047_case_check]
48. Add odd numbers upto a given value.
    [Filename - 0048_sum_odd_numbers]
49. Calculate the BMI(Body Mass Index) of a person.
    [Filename - 0049_bmi_calculator]
50. Input a value in kilometres and convert it into miles.
    [Filename - 0050_km_to_miles]
51. Input 3 numbers and swap them as this : 1st number becomes 2nd number and 2nd number becomes the 3rd number and 3rd number becomes the 1st number.
    [Filename - 0051_circular_swap]
52. Input the total liabilities and shareholders’ equity of a company and print its D/E ratio.
    [Filename - 0052_de_ratio]
53. Print numbers from 1 to 10 using a loop.
    [Filename - 0053_1_to_10]
54. Use a while loop to find the sum of the first n(n input from user) natural numbers.
    [Filename - 0054_sum_n_natural]
55. Print numbers from 1 to 10, but skip 5.
    [Filename - 0055_1_to_10_no_5]
56. Take input from the user repeatedly until they type “exit”.
    [Filename - 0056_repeat_until_exit]
57. Print numbers from 1 to 10, but stop when number is 7.
    [Filename - 0057_1_to_10_no_7]
58. Create a simple menu (looped) that exits when the user selects “Quit”.
    [Filename - 0058_menu_loop]
59. Count the number of digits in a number using while.
    [Filename - 0059_count_digits]
60. Reverse a number.
    [Filename - 0060_reverse_number]
61. Print all numbers from 1 to (user defined number) that are divisible by both 3 and 7.
    [Filename - 0061_divisible_3_and_7]
62. Find the grade based on marks using if-elif-else:
    • 90-100: A
    • 75-89: B
    • 50-74: C
    • <50: Fail
      [Filename - 0062_grade_calculator]
63. Print all odd numbers from 1 to (user defined number)
    [Filename - 0063_odd_numbers]
64. Calculate the factorial of a number using a loop.
    [Filename - 0064_factorial]
65. Create a menu-driven program:
    • Find Square
    • Find Cube
    • Exit
      [Filename - 0065_square_cube_menu]
66. Write a program to start a countdown from the number inputted by the user.
    [Filename - 0066_countdown]
67. Write a program calculating exponentials using a loop.
    [Filename - 0067_exponentials]
68. Write a program to accept the number of rows and print the following:
    [Filename - 0068_pattern_descending]

    Eg. (No of rows: 5)
    12345
    1234
    123
    12
    1
    

69. Write a program to accept the number of rows and print the following:
    [Filename - 0069_pattern_ones]

    Eg. (No of rows: 5)  
    11111  
    1111  
    111  
    11  
    1
    

70. Write a program to check whether a number is a spy number. (sum of digits = product of digits). Eg- 22 -> 2*2 = 2+2
    [Filename - 0070_spy_number]
71. Write a program to accept the number of rows and print the following:
    [Filename - 0071_pattern_reverse_desc]

    Eg. (No of rows: 5)  
    54321  
    4321  
    321  
    21  
    1
    

72. Write a program to check whether a number is an Armstrong number. (sum of cube of digits is equal to the number).
    Eg - 153 ->1³+5³+3³= 153
    [Filename - 0072_armstrong_number]
73. Write a program to accept the number of rows and print the following pattern:
    [Filename - 0073_pattern_sixes]

    Eg. (No of rows: 3)  
    6666  
    6666  
    6666
    

74. Write a program to print the Fibonacci sequence until the term specified by the user.
    [Filename - 0074_fibonacci]
75. Write a program to add odd and even numbers until a number inputted by the user.
    [Filename - 0075_sum_odd_even]
76. Write a program to check whether a character is uppercase or lowercase.
    [Filename - 0076_char_case]
77. Check whether a number is a disarium number. (Sum of digits powered by position = number) Eg. 135 -> 1¹ + 3² + 5³ -> 1 + 9 + 125 -> 135
    [Filename - 0077_disarium_number]
78. Write a program to check whether a number is a magic number. (sum of digits repeatedly checked turns to 1).
    Eg. 73 -> 7+3=10 -> 1+0=1
    [Filename - 0078_magic_number]
79. Write a program to calculate Accuracy, Precision, Recall, F1 score of an AI model.
    [Filename - 0079_ml_metrics]
80. Write a script to find and display the nature of roots (Real or Complex) along with the roots of a quadratic equation.
    [Filename - 0080_quadratic_roots]
81. Write a script to input three numbers and find whether they form the three sides of a triangle.
    [Filename - 0081_triangle_check]
82. Write a script which inputs two numbers from the user and checks if the first number is divisible by the second or not. The script should then display an appropriate message.
    [Filename - 0082_divisibility]
83. Find HCF and LCM of Two Numbers.
    [Filename - 0083_hcf_lcm]
84. Print the following zig-zag number pattern for n =(user inputted number):
    [Filename - 0084_zigzag_pattern]

    Eg - n = 4
    1
    2 3
    4 5 6
    7 8 9 10
    

85. Write a program to:
    • Take input n (number of terms), a (first term), and d (common difference).
    • Print the first n terms of the arithmetic series.
    • Calculate and print the sum of the series.
      [Filename - 0085_arithmetic_series]

      Example:
      Input: n=5, a=2, d=3
      Output: 2 5 8 11 14
      Sum: 40
      

86. Write a program to check whether a number is a perfect number.
    (A perfect number is equal to the sum of its proper divisors.)
    Eg: 28 → 1+2+4+7+14 = 28
    [Filename - 0086_perfect_number]

87. Write a program to check whether a number is an automorphic number.
    (An automorphic number’s square ends with the number itself.)
    Eg: 25 → 25² = 625 ends with 25
    [Filename - 0087_automorphic_number]
88. Write a program that takes a string input from the user and converts all lowercase letters to uppercase and all uppercase letters to lowercase, leaving digits and special characters unchanged.
    [Filename - 0088_toggle_case]
89. Accept a string and a character and check how many words start with the character.
    [Filename - 0089_first_character_check]

📘 Status

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#	QBasic	Java	Python	C	C++	C#	Haskell	Perl	Go	Elixir	Assembly	Fortran	Lua	Ruby	Visual Basic	PowerShell	Batch
0001	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
0002	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0003	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0004	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0005	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0006	✅	❗️	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0007	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0008	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0009	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0010	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0011	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0012	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0013	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0014	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0015	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0016	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0017	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0018	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0019	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0020	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0021	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0022	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0023	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0024	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0025	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0026	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0027	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0028	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0029	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0030	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0031	❌	❗️	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0032	❌	❗️	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0033	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0034	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0035	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0036	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0037	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0038	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0039	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0040	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0041	❌	✅	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0042	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0043	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0044	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0045	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0046	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0047	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0048	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0049	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0050	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0051	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0052	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0053	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0054	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0055	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0056	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0057	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0058	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0059	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0060	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0061	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0062	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0063	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0064	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0065	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0066	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0067	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0068	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0069	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0070	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0071	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0072	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0073	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0074	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0075	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0076	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0077	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0078	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0079	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0080	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0081	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0082	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0083	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0084	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0085	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0086	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0087	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0088	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌
0089	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌	❌

Legend

Symbol	Status	Description
✅	Finished	Program is complete and working
❗️	Beta	Program is functional but may have issues or is work-in-progress
❌	Unfinished	Program not yet implemented or incomplete