Question

Элементы двумерного массива а размером 10х10 первоначально были равны 1 , затем значения некоторых из них меняют с помощью следующего фрагмента программы for n:=1 to 4 do for k:=2 to n+1 do begin a[n, k]-1; a[n, k-1]:= a[n, k]-1; end;

Answer 1

Elements of a 10x10 Two-Dimensional Array

A two-dimensional array is a data structure that stores elements in a grid-like format with rows and columns. In this case, we have a 10x10 two-dimensional array where the elements are initially set to 1. Later, some of these values are modified using the following code fragment:

for n := 1 to 4 do
    for k := 2 to n + 1 do
        begin
            a[n, k] := a[n, k] - 1;
            a[n, k - 1] := a[n, k] - 1;
        end;

Let's break down the code and understand what it does.

- The outer loop `for n := 1 to 4 do` iterates from 1 to 4, inclusive. This means that the code inside this loop will be executed four times. - The inner loop `for k := 2 to n + 1 do` iterates from 2 to `n + 1`, where `n` is the current value of the outer loop variable. The range of `k` increases with each iteration of the outer loop. - Inside the inner loop, the code modifies the values of the array `a`. It subtracts 1 from `a[n, k]` and assigns the result back to `a[n, k]`. Then, it subtracts 1 from `a[n, k - 1]` and assigns the result back to `a[n, k - 1]`.

To summarize, this code fragment decreases the values of certain elements in the 10x10 two-dimensional array `a` by 1. The specific elements that are modified depend on the values of `n` and `k` during each iteration of the loops.

Please let me know if you have any further questions!