Calculator Program

 

 මෙම පාටමාලාව තුල ඇති ප්‍රදානම Assignment එක වන calculator programming සදහා මෙහි උපකාරක කේත දක්වා ඇත.

For Addition (+)  එකතු කිරීම සදහා පමණක් සැකසු

last_calculation = []

def add(a, b):
  global last_calculation
  print(a + b)
  resultformat = "{0} + {1} = {2}".format(str(a), str(b), str(a+b)) #{} place holders, .format- make specific statements
  last_calculation.append(resultformat)

def history():
  global last_calculation
  if last_calculation == []:
   print("no last calculations")
  else:
   for i in last_calculation:
    print(i)

while True:
  print("Select operation.")
  print("1.Add      : + ")
  print("2.Terminate: # ")
  print("3.Reset    : $ ")
  print("4.History  : ? ")

  choice = input("Enter choice + / # / $ / ? -")
  print(choice)
  if (choice == '#'):
   print("Done. Terminating")
   exit()
  elif (choice in ('+','$','?')):
   if choice == '+':
    num1s = input("Enter first number: ")
    num2s = input("Enter second number: ")
    num1  = float(num1s)
    num2  = float(num2s)
    add(num1, num2)
   elif choice == '$':
    print("Reset")
    continue
   elif choice == '?':
    history()
  else:
   print("not a correct input")

Choice තේරීම

 def select_op(choice):
  if (choice == '#'):
    return -1
  elif (choice == '$'):
    return 0
  elif (choice == '?'):
    return 1
 

while True:
  choice = input("Enter choice # / $ / ?-")
  print(choice)
  if(select_op(choice) == -1): #program ends here
   print("Done. Terminating")
   exit()
  elif(select_op(choice) == 0):
   print("Play again")
  elif(select_op(choice) == 1):
   print("Print History")
  else:
   print("Your input is not # / $ / ?")

Chioce In from Given ලබා දී ඇති ඒවා අතරින් තේරීම

choice = input("Enter choice")
if (choice == '#'):
 print("exit")
elif (choice in ('+','-','*','/','^','%','?')):
 print("correct input")
else:
 print("not a correct input")

While TRUE වැඩසටහන නොනවත්වා පවත්වා ගැනීම

while (True):
      num2s = input("Enter $ or #:")
      print(num2s)
      if num2s.endswith('$'):
       print("You entered $")
      elif num2s.endswith('#'):
       print("You entered #")
      else:
       print("You entered another")