How to Change the Size of output screen?

Interesting code:

#include <windows.h>

main()

{

      while(true)

      {

          Sleep(100);

          SMALL_RECT WinRect = {0, 0, rand() % 100 + 1, rand() % 70 + 1};

          SMALL_RECT* WinSize = &WinRect;

          SetConsoleWindowInfo(GetStdHandle(STD_OUTPUT_HANDLE), true, WinSize);

      }

}

This code was for fun, isn't it cool?
Now execute the following code:

#include <windows.h>
main()
{
          SMALL_RECT WinRect = {0, 0, 30, 57 };// 30 is for changing screen horizontally and 57 for changing vertically.
          SMALL_RECT* WinSize = &WinRect;
          SetConsoleWindowInfo(GetStdHandle(STD_OUTPUT_HANDLE), true, WinSize);
}

You can get your desired output screen by changing 30 and 57.