Select all options that print
hello-how-are-you
a) print(‘hello’, ‘how’, ‘are’, ‘you’)
b) print(‘hello’, ‘how’, ‘are’, ‘you’ + ‘-’ * 4)
c) print(‘hello-’ + ‘how-are-you’)
d) print(‘hello’ + ‘-’ + ‘how’ + ‘-’ + ‘are’ + ‘-’ + ‘you’)
The correct answer and explanation is:
The correct options that print hello-how-are-you are:
a) print(‘hello’, ‘how’, ‘are’, ‘you’)
d) print(‘hello’ + ‘-’ + ‘how’ + ‘-’ + ‘are’ + ‘-’ + ‘you’)
Explanation of each option:
- Option a:
print(‘hello’, ‘how’, ‘are’, ‘you’)
In Python, theprint()function prints each argument separated by a space by default. So, when we pass'hello','how','are', and'you'as separate arguments toprint(), it prints each word followed by a space. This results in the output:hello how are youThis does not print “hello-how-are-you”, because spaces are automatically inserted between each argument. - Option b:
print(‘hello’, ‘how’, ‘are’, ‘you’ + ‘-’ * 4)
In this option, the expression'you' + '-' * 4evaluates to'you' + '----', which is'you----'. However, the other arguments'hello','how', and'are'are still printed with spaces in between. The output is:hello how are you----This does not print “hello-how-are-you”, because the hyphens are attached only to'you'and spaces remain between other words. - Option c:
print(‘hello-’ + ‘how-are-you’)
This option concatenates the strings'hello-'and'how-are-you', resulting in the string'hello-how-are-you'. So, the output will be:hello-how-are-youThis prints “hello-how-are-you” as intended. - Option d:
print(‘hello’ + ‘-’ + ‘how’ + ‘-’ + ‘are’ + ‘-’ + ‘you’)
In this option, all the strings are concatenated together with the hyphen ('-') as the separator. The concatenation produces the string'hello-how-are-you'. The output is:hello-how-are-youThis prints “hello-how-are-you” as well.
Conclusion:
The correct options that print hello-how-are-you are c and d. Option a prints each word separated by spaces, and option b adds hyphens only at the end of 'you', not between all words.