To add 'ing' at the end of a given string (length should be at least 3). If the given string already ends with 'ing' then add 'ly' instead. If the string length of the given string is less than 3, leave it unchanged. Sample String : 'abc' Expected Result : 'abcing' Sample String : 'string'

#To add 'ing' at the end of a given string (length should be at least 3). If the
#given string already ends with 'ing' then add 'ly' instead. If the string length of
#the given string is less than 3, leave it unchanged.
#   Sample String : 'abc'
#   Expected Result : 'abcing'
#   Sample String : 'string'

Expected Result : 'stringly'

def isConSpace(s):
    for n in s:
        if n == " ":
            return True
    return False
str = input("Enter a string : ")

if(len(str)>0):
    if(isConSpace(str)==False):
        if(str.isalpha()):
            if(len(str)>2):
                if(str[-3:] == "ing"):
                    str+=("ly")
                    print(str)
                else:
                    str+=("ing")
                    print(str)
            else:
                print(str)
        else:
            print("String must be contain only alphabet.")
    else:
        print("Please enter a string without space.")
else:
    print("String is empty.")

input("Press Enter to exit.")

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