c++ string in string check [duplicate]

This question already has an answer here:

• Check if a string contains a string in C++ 12 answers

I need to check if a string is within a different string. In Python I would write it like this:

if('word' in 'this is a string of words'):
    print('True')
else:
    print('False')

>>True

How would I write that in c++? and what imports would I need?