Explain this program

Can someone please explain the logical thought process that's going behind the scenes when this program compiles?

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
#include <iomanip> //used for set/get functions
#include <iostream>

using namespace std;
typedef int* IntPtr;

int *create2DArray(int rows, int col);
int get(IntPtr array, int rows, int col, int drow, int dcol);
void set(IntPtr array, int rows, int col, int drow, int dcol, int result);


int main()
{
    IntPtr p = create2DArray (4,2);

    for (int i = 0; i < 4; i++) //initializing rows
    {
        for (int j = 0; j < 2; j++) //initializing collumns
        {
            set(p, 3, 2, i, j, i * 4 + j);
        }
    }
    for (int i = 0; i < 3; i++)
    {
         for (int j = 0; j < 2; j++)
         {

             cout<<get(p, 3, 2, i , j);
             cout <<endl;

         }
    }
    set(p, 3, 2, 2, 2, 3);
    get(p, 3, 2, 2, 2);

    return 0;


}
int *create2DArray(int rows, int col) //one dimensional array emmulating 2 dimensional array
{
    return new int [rows * col];
}

int get(IntPtr array, int rows, int col, int drow, int dcol)
{
    if ((drow < rows) && (dcol < col) && (drow >= 0) && (dcol >= 0))
    {
       return array[drow * col + dcol];

    }
    else
    {
        cout << "Invalid value" << endl;
    }
}

void set(IntPtr array, int rows, int col, int drow, int dcol, int result)
{
    if ((drow < rows) && (dcol < col) && (drow >= 0) && (dcol >= 0))
    {
        array[drow * col + dcol] = result;

    }
    else
    {
        cout << "Invalid value" << endl;
    }
}
Can someone please explain the logical thought process that's going behind the scenes when this program compiles?


Are you referring to how the compiler interprets the code or how a human does?
Topic archived. No new replies allowed.