void undo(void)
{
    int i1,j1,i2,j2;
    char eaten;
    char piece;
    int checker;



    if(turn==2)
    {

        if(pointer1<=0){
        printf("No thing to undo.\nPlease play a move.");
        movement();
        return;
        }else{

        i2=steps1[pointer1].domain1i;
        j2=steps1[pointer1].domain1j;
        i1=steps1[pointer1].domain2i;
        j1=steps1[pointer1].domain2j;
        eaten=steps1[pointer1].eaten;
        piece=steps1[pointer1].piece;

        domain[i2][j2]=piece;
        domain[i1][j1]=eaten;
        if(domain[i1][j1]=='k')
        {
            kp1i=i2;
            kp1j=j2;
        }
        if(isupper(domain[i1][j1])){
        number_killed2--;}
        pointer1--;
       }
       blackandwhite(i1,j1);

    }
    else
    {

         if(pointer2<=0){
        printf("No thing to undo.\nPlease play a move.");
        movement();
        return;
        }else{

        i2=steps2[pointer2].domain1i;
        j2=steps2[pointer2].domain1j;
        i1=steps2[pointer2].domain2i;
        j1=steps2[pointer2].domain2j;
        eaten=steps2[pointer2].eaten;
        piece=steps2[pointer2].piece;
        domain[i2][j2]=piece;
        domain[i1][j1]=eaten;
         if(domain[i1][j1]=='K')
        {
            kp2i=i2;
            kp2j=j2;
        }
        if(islower(domain[i1][j1])){
        number_killed1--;}
        }
        blackandwhite(i1,j1);
        pointer2--;
    }

}
void redo(void)
{
    int i1,j1,i2,j2;
    char eaten,piece;
    if(turn==1)
    {
            if(pointer1==counter_steps1)
            {
                printf("You can't re-do.\nPlease play a move.");
                movement();
                return;
            }
            else
            {
                pointer1++;
                i1=steps1[pointer1].domain1i;
                j1=steps1[pointer1].domain1j;
                i2=steps1[pointer1].domain2i;
                j2=steps1[pointer1].domain2j;
                eaten=steps1[pointer1].eaten;
                piece=steps1[pointer1].piece;

                if(isupper(domain[i2][j2])){

                    killed2[number_killed2]=eaten;
                    number_killed2++;
                }


                    if(domain[i1][j1]=='p' && i2==7)
                    {
                        premote(&domain[i1][j1]);
                    }
                domain[i2][j2]=domain[i1][j1];
                occupied[i1][j1]=0;
                if(domain[i2][j2]=='k')
                    {
                    kp1i=i2;
                    kp1j=j2;
                    }

                blackandwhite(i1,j1);


            }
    }else
    {

            if(pointer2==counter_steps2)
            {
                printf("You can't re-do.\nPlease play a move.");
                movement();
                return;
            }
            else
            {
                pointer2++;
                i1=steps2[pointer2].domain1i;
                j1=steps2[pointer2].domain1j;
                i2=steps2[pointer2].domain2i;
                j2=steps2[pointer2].domain2j;
                eaten=steps2[pointer2].eaten;
                piece=steps1[pointer1].piece;
                if(islower(domain[i2][j2]))
                    {
                    killed1[number_killed1]=eaten;
                    number_killed1++;
                }
                      if(domain[i1][j1]=='P' && i2==0)
                    {
                        premote(&domain[i1][j1]);
                    }
                domain[i2][j2]=domain[i1][j1];
                occupied[i1][j1]=0;
                if(domain[i2][j2]=='K')
                    {
                    kp2i=i2;
                    kp2j=j2;
                    }

                blackandwhite(i1,j1);

            }
    }

}