一道简单的数据结构题？

[huore]

本人刚开始学习C数据结构，遇到一个小问题，请帮忙。
/*用单链表遍一个学生成绩系统。具有查询成绩，修改成绩，删除成绩，添加 成绩全班平均*/
#include <stdlib.h>

struct list
{int index;
int number;

int chinese,english,math;
struct list *next;
};
typedef struct list node;
typedef node *link;
int inquire(link head,int index)
{link pointer;
pointer=head;
while(pointer!=NULL)
{printf("Student scores\n");
printf("%d ",index);
printf(" School Number:%d\n",pointer->number);
printf(" Chinese score:%d\n",pointer->chinese);
printf(" English score:%d\n",pointer->english);
printf(" Math score:%d\n",pointer->math);
pointer=pointer->next;
}

}

int modify(link head)
{link pointer;
pointer=head;
int chinese0,english0,math0;
int index0;
scanf("%d",index0);
while(pointer!=NULL)
{if(pointer->index==index0)

{printf("========================================");
printf("=1.Modify Number =");
prinrf("=2.Modify Name =");
prinrf("=3.Modify Chineae score =");
prinrf("=4.Modify English score =");
prinrf("=5.Modify Math score =");
printf("========================================");
printf("Please input your choose");
int select;
scanf("%d",select);
switch(select)
{case 1: printf(" School Number:\n",number0);
int number0;
scanf("%d",number0);
pointer->number=number0;
break;
case 2:
break;
case 3: printf(" Chinese score:\n",chinese0);
int chinese0;
scanf("%d",chinese0);
pointer->chinese=chinese0;
break;
case 4: printf(" English score:\n",english0);
int english;
scanf("%d",english);
pointer->english=english0;
break;
case 5: printf(" Math score:\n",math0);
int math0;
scanf("%d",math0);
pointer->math=math0;
break;
}
pointer=pointer->next;
}
}


delet(link head)
{link pointer;
link back;
pointer=head;
int index1;
printf("Please input the student index you want to delete\n");
scanf("%d",index1);

while(pointer!=NULL)
{if(head.>next=index1)
{head=pointer->next;
free(pointer);
break; }

back=pointer;
pointer=pointer->next;
if(pointer->index=index1)
{back->next=pointer->next;
free(pointer);
}
}
return head;

}


link add(link head)
{ link pointer;
pointer=head;
link new0;

int index2=0;
int number1;
int chinese1,english1,math1;
new0=(link)malloc(sizeof(node));
while(pointer!=NULL)
{pointer=pointer->next;
index2++}
new0->index=index2;
printf("Please Input the data\n");
printf("School Number\n");
scanf("%d",number1);
new0->number1;
printf("Chinese\n");
scanf("%d",chinese1)
new0->chinese=chinese1;
printf("English\n");
scanf("%d",english1);
new0->english=english1;
printf("Math");
scanf("%d",math1);
new0->math=math1;
pointer->next=new0->next;
pointer->next=new0;

}


link average(head)
{ link pointer;
pointer=head;
int sum,i,ave;
i=0;
sum=0;
while(pointer!=NULL)
{sum=pointer.>chinese+pointer.>english+pointer.>math+sum;
pointer=pointer->next;
i++;
}
ave=sum/i;
printf("Score average Is:%d",ave);

}


void main()
{
link head;
head=(link)malloc(sizeof(node));
int selection;

while(1)
{printf("========================================");
printf("=Simple Student Score Management System=");
prinrf("=1.inquire student score =");
prinrf("=2.modify student score =");
prinrf("=3.delete student score =");
prinrf("=4.add student score =");
prinrf("=5.student average score =");
prinrf("=6.quit =");
printf("========================================");
printf("Please input your choose");
scanf("%d",selection);
switch(selection)
{case 1:inquire(head);
break;
case 2:modify(head);
break;
case 3:delet(head);
break;
case 4:add(head);
break;
case 5:average(head);
break;
case 6:
exit(1);
break;
}
}

}

[huore]

竟然有十多个错误，请大家帮忙解决
谢谢

[langhaixin]

typedef struct list node;
typedef node *link; //这样定义类型不行 还是把这行删了
//或是改成typedef node* link;

int inquire(node ** head,int index) //此处
{node *pointer;
pointer=*head;

int modify(node **head) //这里也时
{node *pointer;
pointer=*head;

delet(node **head) //又是同样的错误
{node *pointer;
node *back;
pointer=*head;

//类似的错误很多

[luoxiao_std01]

把你的错误提示写出来！

[drason]

太经典了

[poly30]

你的错误多数来源自：对指针的不熟悉，在指针的使用之前，必须初始化。

比如：link linkpoint=NULL;

还有，最好把你的错误都列出来。

[kaitty]

你这不叫程序，我看你最好从小程序做起。

[kongyi]

关注

[A_code]

程序编得不错嘛!只不过错误实在让我不敢恭维,"竟然有十多个错误",这可不是十几个的问题,编译一下你就会发现十几个只是第一个函数(modify)的错误而已.还有你把printf写成prinrf,我看了半天才看出来(我也很差劲的),以后可要小心点了.
我已经调试好的程序是:

include <stdlib.h>

struct list
{int index;
int number;

int chinese,english,math;
struct list* next;
};
typedef struct list node;
typedef node* link;
int inquire(link head,int index)
{link pointer=NULL;
pointer=head;
while(pointer!=NULL)
{printf("Student scores\n");
printf("%d ",index);
printf(" School Number:%d\n",pointer->number);
printf(" Chinese score:%d\n",pointer->chinese);
printf(" English score:%d\n",pointer->english);
printf(" Math score:%d\n",pointer->math);
pointer=pointer->next;
}

}

int modify(link head)
{link pointer=head;
int chinese0,english0,math0;
int index0,number0;
int select0;
scanf("%d",&index0);
while(pointer!=NULL)
{if (pointer->index==index0)
{
printf("========================================");
printf("=1.Modify Number =");
printf("=2.Modify Name =");
printf("=3.Modify Chineae score =");
printf("=4.Modify English score =");
printf("=5.Modify Math score =");
printf("========================================");
printf("Please input your choose:");
scanf("%d",&select0);
switch(select0)
{
case 1: printf(" School Number:\n");
scanf("%d",&number0);
pointer->number=number0;
break;
case 2:
break;
case 3: printf(" Chinese score:\n");

scanf("%d",&chinese0);
pointer->chinese=chinese0;
break;
case 4: printf(" English score:\n");

scanf("%d",&english0);
pointer->english=english0;
break;
case 5: printf(" Math score:\n");

scanf("%d",&math0);
pointer->math=math0;
break;
}
}
pointer=pointer->next;
}

}

delet(link head)
{link pointer=head;
link back;
int index1;
printf("Please input the student index you want to delete\n");
scanf("%d",&index1);
while(pointer!=NULL)
{ if(head->index==index1)
{
head=pointer->next;
free(pointer);
break;
}
back=pointer;
pointer=pointer->next;
if(pointer->index==index1)
{
back->next=pointer->next;
free(pointer);
}
}
return 0;

}


link add(link head)
{ link pointer=head;
link new0;

int index2=0;
int number1;
int chinese1,english1,math1;
new0=(link)malloc(sizeof(node));
while(pointer!=NULL)
{
pointer=pointer->next;
index2++;
}
new0->index=index2;
printf("Please Input the data\n");
printf("School Number\n");
scanf("%d",&number1);
new0->number=number1;
printf("Chinese\n");
scanf("%d",&chinese1);
new0->chinese=chinese1;
printf("English\n");
scanf("%d",&english1);
new0->english=english1;
printf("Math");
scanf("%d",&math1);
new0->math=math1;
pointer->next=new0;
new0->next=NULL;

}


link average(link head)
{ link pointer=head;
int sum,i,ave;
i=0;
sum=0;
while(pointer!=NULL)
{ sum=pointer->chinese+pointer->english+pointer->math+sum;
pointer=pointer->next;
i++;
}
ave=sum/i;
printf("Score average Is:%d",ave);

}


void main()
{
link head=(link)malloc(sizeof(node));
int selection;
int index;
while(1)
{printf("==================");
printf("Simple Student Score Management System");
printf("==================\n");
printf("========== 1. inquire student score ===========\n");
printf("========== 2. modify student score =========== \n");
printf("========== 3. delete student score ===========\n");
printf("========== 4. add student score ===========\n");
printf("========== 5. student average score ===========\n");
printf("========== 6. quit ===========\n");
printf("==========================================================================\n");
printf("Please input your choose:");
scanf("%d",&selection);
switch(selection)
{case 1:printf("Please input your inpuire number:");
scanf("%d",&index);
inquire(head,index);
break;
case 2:modify(head);
break;
case 3:delet(head);
break;
case 4:add(head);
break;
case 5:average(head);
break;
case 6:
exit(1);
break;
}
}

}


是在tubro2.0上通过的.我改了一些界面.不过程序的功能好像还有一些不对.
我也在学C语言,以后有问题的话,希望和能和大家多交流.

[Alexeyomux]

能不能写出错误提示和你对错误的看法？或许这样更好。

[yangguang0]

很不错

[huore]

感谢A_code(A频道)
可是还是不对啊，你有26个错误，6个警告

[huore]

不好意思我看错了，改好了。
再次谢谢A_code(A频道)
给你加分。