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From JOYCE, 2 Months ago, written in Python.
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  1. '''Q.1) Write an interactive python program to perform the following
  2. (a) to input an integer and check whether it is a perfect no or not. checkperfect()
  3. (b) to pass an integer argument and check whether it’s a prime no or not. checkprime(n)
  4. (c) to pass an integer argument and check whether it is an Armstrong or not. checkarmstrong(n)
  5. (d) Exit from the menu and quit the program.'''
  6. def checkperfect():
  7.      s=0
  8.      for i in range(1,n):
  9.           if n%i==0:
  10.                s+=i
  11.      if n==s:
  12.           print('Perfect number')
  13.      else:
  14.           print('Not Perfect number')
  15. def checkprime(n):
  16.      for i in range(2,n):
  17.           if n%i==0:
  18.                print('Not a prime number')
  19.                break
  20.      else:
  21.           print('Prime number')
  22. def checkarmstrong(n):
  23.      m=n
  24.      s=0
  25.      while n!=0:
  26.           d=n
  27.           s=s+d**3
  28.           n=n//10
  29.      if m==s:
  30.           print('Armstrong number')
  31.      else:
  32.           print('Not a armstrong number')
  33. #--main--#
  34. ch=1
  35. while ch!=4:
  36.     print("1.To check perfect number or not")
  37.     print("2.To check prime number or no")
  38.     print("3.To check armostrong or not")
  39.     print("4.To Exit")
  40.     ch=int(input("Enter choice:"))
  41.     if ch==1:
  42.         n=int(input("Enter a number"))
  43.         checkperfect()
  44.     elif ch==2:
  45.         n=int(input("Enter a number"))
  46.         checkprime(n)
  47.     elif ch==3:
  48.         n=int(input("Enter a number"))
  49.         checkarmstrong(n)
  50.     elif ch!=4:
  51.         print("Invalid choice")
  52.     print("-"*20)
  53.  
  54. ''' OUTPUT'''
  55. 1.To check perfect number or not
  56. 2.To check prime number or no
  57. 3.To check armostrong or not
  58. 4.To Exit
  59. Enter choice: 1
  60. Enter a number 4
  61. Not Perfect number
  62. --------------------
  63. 1.To check perfect number or not
  64. 2.To check prime number or no
  65. 3.To check armostrong or not
  66. 4.To Exit
  67. Enter choice: 1
  68. Enter a number 6
  69. Perfect number
  70. --------------------
  71. 1.To check perfect number or not
  72. 2.To check prime number or no
  73. 3.To check armostrong or not
  74. 4.To Exit
  75. Enter choice: 2
  76. Enter a number 2
  77. Prime number
  78. --------------------
  79. 1.To check perfect number or not
  80. 2.To check prime number or no
  81. 3.To check armostrong or not
  82. 4.To Exit
  83. Enter choice: 3
  84. Enter a number 636
  85. Not a armstrong number
  86. --------------------
  87. 1.To check perfect number or not
  88. 2.To check prime number or no
  89. 3.To check armostrong or not
  90. 4.To Exit
  91. Enter choice: 3
  92. Enter a number 371
  93. Armstrong number
  94. -------------------
  95. 1.To check perfect number or not
  96. 2.To check prime number or no
  97. 3.To check armostrong or not
  98. 4.To Exit
  99. Enter choice:4
  100. --------------------