(some of these links, code snippets are Linux, and others are Windows)
Given your specific questions, (and assuming you do know how to write an array to the console) :
1) write the first array.
2) Then Clear The Console (or over write the console)
Something like this:
#include <stdlib.h>
void main()
{
system("cls");
}
Or write the following to stdout: (Linux)
write(1,"\E[H\E[2J",7);
which is what /usr/bin/clear does except it does not create another process.
Or both:
void clear_screen()
{
#ifdef WINDOWS
system ( "CLS" );
#else
// Assume POSIX
system ( "clear" );
#endif
}
3) write the next array