11.11.cpp

c入门代码大全

//插入结点函数insert如下
struct student * insert(struct student *head , struct student *stud)
{

    struct student *p0 , *p1 , *p2 ;
    p1 = head ;
    p0 = stud ;
    if(head == NULL)
       {
            head = p0 ;
            p0->next = NULL ;
       }
    else
      {
      
            while((p0->num > p1->num)&&(p1->next!=NULL))
               {
               
                  p2 = p1 ;
                  p1 = p1->next ;
               
               }
            if(p0->num < p1->num)
              {
              
                  if(head == p1)
                     head = p0 ;
                  else
                     p2->next = p0 ;
                  p0->next = p1 ;
              
              }
            else
              {
              
                  p1->next = p0 ;
                  p0->next = NULL ;
                  
              }
            n = n+1 ;
            return (head) ;
      
      }
       
}