Section 5.4 does not mention the terminating null character.

**What Course are you in**
Knowing the course will help us a lot

cpp4python

**What Page were you on**
Section 5.4

**What is your username**
njounkengdaizem

**Describe the bug**
Section 5.4 does not mention the terminating null character. But it was the correct answer to Activity: 5.4.1

**Traceback**
Section 5.4 > Activity: 5.4.1
