缺少break？
#define Null 0
#define INF sizeof(struct information)
#include<stdlib.h>
#include<stdio.h>
struct information
{
int num;
int amo;
struct information *next;
};
struct information *creat(int n)
{
struct information *head=NULL,*p1,*p2;
head=p2=(struct information *)malloc(INF);
{
p1=(struct information*)malloc(INF);
p2->next=p1;
p2=p1;
}
p2->next=NULL;
return(head);
}
struct information *solve(struct information*head,struct information *info)
{
struct information *p3,*p4,*p5;
p3=head;
p5=info;
if(head==NULL)
{
head=p5;
p5->next=NULL;
}
else
{
while((p5->num>p3->num)&&(p3->next!=NULL))
{
p4=p3;p3=p3->next;
}
if (p5->num<=p3->num)
{
if(p5->num==p3->num)
p5->num=(p5->num+p5->num);
else p4->next=p5;
p5->next=p4;
}
else
{
p4->next=p5;p5->next=NULL;
}
}
return(head);
}
void main()
{
int a;
char answer,Y,N;
struct information *p;
struct information *p3;
information *creat();
printf("1->输入内容\n2->查看数据\n请选择\n");
scanf("%d",&a);
if(a==1)
{
printf ("Input the number and amount\n");
scanf ("%d%d",&p3->num,&p3->amo);
printf("Continue? Y/N?\n");
scanf("%c",&answer);
while (answer==Y)
printf("%d,%d\n",&p->num,&p->amo);
p=p->next;
}
else
{
do
{
printf("%d %d\n",p->num,p->amo);
p=p->next;
}
while
(p!=NULL);
}
}
这是最近写的一个程序，可是却一执行的时候就无法结束，难道是缺少break语句吗？大家可以自己执行一下试试

[解决办法]

C/C++ code

#include<stdlib.h>#include<stdio.h>struct information{int num;int amo;struct information *next;};#define Null 0#define INF sizeof(struct information)struct information *creat(int n){    struct information *head=NULL,*p1,*p2;    head=p2=(struct information *)malloc(INF);//    for(int i=0; i < n; ++i)//创建n个节点    {        //你这里是什么情况，虽然没有错误，但是不对！        //应该是在这里给节点输入数据，只是在这里分配内存        //...        p1=(struct information*)malloc(INF);        p2->next=p1;        p2=p1;    }    p2->next=NULL;    return(head);}struct information *solve(struct information*head,struct information *info){    struct information *p3,*p4,*p5;    p3=head;    p5=info;    if(head==NULL)    {        head=p5;        p5->next=NULL;    }    else    {        while((p5->num>p3->num)&&(p3->next!=NULL))        {            p4=p3;p3=p3->next;        }        if (p5->num<=p3->num)        {            if(p5->num==p3->num)                p5->num=(p5->num+p5->num);            else p4->next=p5;            p5->next=p4;        }        else        {            p4->next=p5;p5->next=NULL;        }    }    return(head);}void main(){    int a;    char answer,Y,N;    struct information *p;    struct information p3;        //问题一：information *creat()这是什么表示方法？    //问题二：你这里要修改一个能够接受返回值head对象作为头结点    //问题三：还有creat()的参数你也该给一个！！    printf("1->输入内容\n2->查看数据\n请选择\n");    scanf("%d",&a);    if(a==1)    {        printf ("Input the number and amount\n");        scanf ("%d%d",&p3.num,&p3.amo);//        printf("Continue? Y/N?\n");        scanf("%c",&answer);        while (answer == 'Y')//Y是什么，你给值吧，不要给个变量，我就给你修改为'Y'            printf("%d,%d\n",&p->num,&p->amo);        p=p->next;    }    else    {        do        {            printf("%d %d\n",p->num,p->amo);            p=p->next;        }while(p!=NULL);    }}