Page 382 - Computer Science Class 11 Without Functions
P. 382

if color.lower() == "red":

                print("STOP")
             elif color.lower() == "yellow":

                print("Get ready")
             elif color.lower() == "green":
                print("GO")
             else:

                print("You have not entered the correct color")
        Program 22

        Write a program that takes a number num as an input and prints the sum of natural numbers until the limit defined
        by num.

        Ans. '''
             Objective: To calculate sum of first N natural numbers

             Input: num
             Output: sum of natural numbers until a user defined limit num

             '''
             num = int(input('Enter N:'))
             sumUntilNum = 0
             for i in range(1, num):

                 sumUntilNum += i

             print("Sum of the N natural numbers:", sumUntilNum)

        Program 23
        Write a program to accept a number and display its reverse.

        Ans. '''

             Objective: To calculate reverse of a number
             Input: number
             Output: reversed number
             '''

             number = int(input("Enter a number: "))
             reverse = 0
             while number > 0:

               digit = number % 10
               reverse = reverse * 10 + digit
               number = number // 10

             print("Reverse of the number:", reverse)





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