Remove one or two middle letters from a word

Peter Kennedy wrote:. . .
. . . - (n%2==0) . . .

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Finding ready solutions on the internet won't do. Instead, tell us how YOU would solve the problem. What are you stuck on?

Peter Kennedy wrote:

Peter Kennedy wrote:I need the shortest possible c++ code to solve this problem, with an explanation of each line of code. Here is the task: the word is given. If its length is odd, then delete the middle letter, otherwise - two middle letters.

I found solutions to this task on the Internet, but the solutions are huge and without explanation, and I need to learn it and it should be as short as possible in c++ code with an explanation of each line of code. So I found solutions:
#include <iostream> #include <cstring> int main(){ char str[1000];; std::cin.getline(str, 1000); int n = strlen(str); int ser = n / 2 - (n%2==0), i = ser, shift = 1 + (n%2==0);    for (i = ser; i != n - shift; i++) str[i] = str[i + shift]; str[i] = '\0'; std::cout << str << std::endl; }

Peter Kennedy wrote:I asked for a solution to this problem, I need the shortest possible C ++ code with an explanation of each line of code for that task.

Peter Kennedy wrote:I found the code on some site, I do not remember exactly which one. . . . .