循环:program rubbitandhen;varleg,head,rubbit,han:integer;beginwriteln('head,leg:');
{打出:输入头和脚的个数}readln(head,leg);
{输入头和脚的个数}for rubbit:=1 to head do
{ 给兔的个数设循环1---头的数量} for han:=(head-rubbit)to head do{ 给鸡的个数设循环1---头的数量}begin if (han+rubbit=head) and (4*rubbit+2*han=leg...