টপিকঃ How does getchar() work?

I am learning C and i'm confused on how getchar really works. According to my sample program here everytime you call getchar() on a variable it gets the current char at the 0th element and when you call it again it goes to the next spot in the string i type. Is this how it actually works?

I didn't find the right solution from the Internet.

-References
-http://www.programmingforums.org/thread48543.html

-Asset Management Video

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