谁能帮我看看这代码哪里错了。。。
#include<stdio.h>
#include<stdlib.h> /*标准函数库*/
#include<conio.h>/*屏幕操作函数*/
#define LEN sizeof(struct txt)
void newtxt();/*新建文件*/
void displaytxt();/*显示文件*/
void modifytxt();/*修改数据*/
void main()
{
struct txt{
int num;
char word;
struct txt * next;
};
int c;
printf("*************菜单**************\n");
printf("1.新建文件 \n");
printf("2.显示数据\n");
printf("3.修改数据\n");
printf(" 4.退出(任何情况下按Ctrl+C退出程序)\n");
do
{
printf("\n\t\t 输入你的选择(1-4):");
scanf("%d",&c);
}while(c<0||c>4);
switch(c)
{
case 1: system("cls"); newtxt();break;
case 2: system("cls"); displaytxt();break;
case 3: system("cls"); modifytxt();break;
case 4: exit(0);
}
}
void newtxt()/*新建文件*/
{
printf("请输入文件名：");
char name[32];
scanf("%s",name);
system("cls");
printf("请输入数据，输入#号键后按回车结束\n");
FILE *fp;
fp=fopen(name,"w");
char ch;
while((ch=getchar())!='#')
{
fputc(ch,fp);
}
fputc('#',fp);
fclose(fp);
printf("\n\t\t按任意键返回......\n");
getch();
system("cls"); /*清屏*/
return;
}
void displaytxt()/*显示文件*/
{
printf("请输入文件名：");
char name[32];
scanf("%s",name);
system("cls");
FILE *fp;
fp=fopen(name,"r");
char ch;
while((ch=fgetc(fp))!='#')
{
putchar(ch);
}
fclose(fp);
printf("\n\t\t\t按任意键返回......\n");
getch();
system("cls"); /*清屏*/
return;
}
void modifytxt()
{ struct txt{
int num;
char word;
struct txt * next;
};
struct txt * del(struct txt *head);
struct txt * insert(struct txt *head);
struct txt * replace(struct txt *head);
printf("请输入文件名：");
char name[32],ch;
scanf("%s",name);
system("cls");
FILE *fp;
fp=fopen(name,"r");
struct txt *head;
struct txt*p1,*p2,*p;
int n=0;
head=NULL;
p1=p2=(struct txt *)malloc(LEN);
p1->num=0;
while((ch=fgetc(fp))!='#')
{n++;
p1->num++;
p1->word=ch;
if(n==1) head=p1;
else p2->next=p1;
p2=p1;
p1=(struct txt *)malloc(LEN);
}
p1->num++;
p1->word='#';
p2=p1;
p2->next=NULL;
fclose(fp);
int j,i;
p=head;
for(j=1;j<n;j++)
printf("%c",p->word);
printf("请选择选项：\n");
printf("1.删除；\n");
printf("2.插入；\n");
printf("3.替换；\n");
printf("4.退出；\n");
scanf("%d",&i);
switch(i)
{
case '1':system("cls");struct txt * del(struct txt *head);n=n-1;break;
case '2':system("cls");struct txt * insert(struct txt *head);n=n+1;break;
case '3':system("cls");struct txt * replace(struct txt *head);break;
case '4':system("cls");exit(0);
}
printf("请输入文件名：");
scanf("%s",name);
system("cls");
FILE *fp1;
fp1=fopen(name,"w");
p1=head;
while((ch=p1->word)!='#')
{
fputc(ch,fp);
p1=p1->next;
}
fclose(fp1);
return;
}
struct txt * del(struct txt *head)
{
long del_num;
struct txt * p1,* p2;
printf("请输入要删除第几个节点");
scanf("%d",&del_num);
if(head==NULL)
{printf("该文件是空文件");return(head);};
p1=head;
while(del_num!=(p1->num) && (p1->next)!=NULL)
{
p2=p1;
p1=p1->num;
}
if(del_num==p1->num)
{
if(p1==head) head=p1->next;
else p2->next=p1->next;
printf("%d点已经删除",del_num);
}
else printf("无法找到该节点")；
return(head);
}
struct txt * insert(struct txt *head)
{ long insert_num;
printf("请输入要插入到节点之前还有要插入的值");
scanf("%d",&insert_num);
scanf("%d,%c",&stu->num,&stu->word);
struct txt *p0,*p1,*p2;
p1=head;
p0=stu;
if(head==NULL)
{head=p0;p0->next=NULL}
else
{
while((insert_num>p->num)&&(p1->!=NULL))
{
p2=p1;
p1=p1->next;
}
if(insert_num<=p1->num)
{
if(head==p1) head=p0;
else
p2->next=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
return(head);
}
struct txt * replace(struct txt *head)
{long replace_num;
printf("请输入要替换的节点");
scanf("%d",replace_num);
scanf("%d,%c",&stu->num,&stu->word);
struct txt *p0,*p1,*p2;
p1=head;
p0=stu;
if(head==NULL)
{head=p0;p0->next=NULL}
else
{
while((replace_num>p->num)&&(p1->!=NULL))
{
p2=p1;
p1=p1->next;
}
if(replace_num==p1->num)
p1=stu;
else
printf("无法找到该节点");
}
return(head);
}
[解决办法]
错误有点多，先把struct txt的定义放在main外面再调把。你定义在main里面是局部变量。
外面看不到的。另外楼主还是多熟悉一下语法
[解决办法]
帮顶，太长了，我急性子，
[解决办法]
你这错误太多了 不懂你的逻辑 懒得看啊
#include<stdio.h>#include<stdlib.h> /*标准函数库*/#include<conio.h>/*屏幕操作函数*/#define LEN sizeof(struct txt)void newtxt();/*新建文件*/void displaytxt();/*显示文件*/void modifytxt();/*修改数据*/ struct txt{ int num; char word; struct txt * next;};void main(){ int c; printf("*************菜单**************\n"); printf("1.新建文件 \n"); printf("2.显示数据\n"); printf("3.修改数据\n"); printf(" 4.退出(任何情况下按Ctrl+C退出程序)\n"); do { printf("\n\t\t 输入你的选择(1-4):"); scanf("%d",&c); }while(c<0||c>4); switch(c) { case 1: system("cls"); newtxt();break; case 2: system("cls"); displaytxt();break; case 3: system("cls"); modifytxt();break; case 4: exit(0); }} void newtxt()/*新建文件*/{ printf("请输入文件名："); char name[32]; scanf("%s",name); fflush(stdin); system("cls"); printf("请输入数据，输入#号键后按回车结束\n"); FILE *fp; fp=fopen(name,"w"); char ch; while((ch=getchar())!='#') { fputc(ch,fp); } fputc('#',fp); fclose(fp); printf("\n\t\t按任意键返回......\n"); getch(); fflush(stdin); system("cls"); /*清屏*/ return;} void displaytxt()/*显示文件*/{ printf("请输入文件名："); char name[32]; scanf("%s",name); fflush(stdin); system("cls"); FILE *fp; fp=fopen(name,"r"); char ch; while((ch=fgetc(fp))!='#') { putchar(ch); } fclose(fp); printf("\n\t\t\t按任意键返回......\n"); getch(); system("cls"); /*清屏*/ fflush(stdin); return;}void modifytxt(){ struct txt * del(struct txt *head); struct txt * insert(struct txt *head); struct txt * replace(struct txt *head); printf("请输入文件名："); char name[32],ch; scanf("%s",name); fflush(stdin); system("cls"); FILE *fp; fp=fopen(name,"r"); struct txt *head; struct txt *p1,*p2,*p; int n=0; head=NULL; p1=p2=(struct txt *)malloc(LEN); p1->num=0; while((ch=fgetc(fp))!='#') { n++; p1->num++; p1->word=ch; if(n==1) head=p1; else p2->next=p1; p2=p1; p1=(struct txt *)malloc(LEN); } p1->num++; p1->word='#'; p2=p1; p2->next=NULL; fclose(fp); int j,i; p=head; for(j=1;j<n;j++) printf("%c",p->word); printf("请选择选项：\n"); printf("1.删除；\n"); printf("2.插入；\n"); printf("3.替换；\n"); printf("4.退出；\n"); scanf("%d",&i); switch(i) { case '1':system("cls");struct txt * del(struct txt *head);n=n-1;break; case '2':system("cls");struct txt * insert(struct txt *head);n=n+1;break; case '3':system("cls");struct txt * replace(struct txt *head);break; case '4':system("cls");exit(0); } printf("请输入文件名："); scanf("%s",name); system("cls"); FILE *fp1; fp1=fopen(name,"w"); p1=head; while((ch=p1->word)!='#') { fputc(ch,fp); p1=p1->next; } fclose(fp1); return;}struct txt * del(struct txt *head) { long del_num; struct txt * p1,* p2; printf("请输入要删除第几个节点"); scanf("%d",&del_num); if(head==NULL) { printf("该文件是空文件"); return(head); } p1=head; while(del_num!=(p1->num) && (p1->next)!=NULL) { p2=p1; p1=p1->next; } if(del_num==p1->num) { if(p1==head) head=p1->next; else p2->next=p1->next; printf("%d点已经删除",del_num); } else printf("无法找到该节点"); return(head);}struct txt * insert(struct txt *head){ long insert_num; struct txt *stu = (struct txt *) malloc( sizeof(struct txt)); printf("请输入要插入到节点之前还有要插入的值"); scanf("%d",&insert_num); scanf("%d,%c",&stu->num,&stu->word); struct txt *p0,*p1,*p2; p1=head; p0=stu; if(head==NULL) { head=p0; p0->next=NULL; } else { while((insert_num > p1->num)&&(p1->next!=NULL)) { p2=p1; p1=p1->next; } if(insert_num<=p1->num) { if(head==p1) head=p0; else p2->next=p0; p0->next=p1; } else { p1->next=p0; p0->next=NULL; } } return(head);}struct txt * replace(struct txt *head) { long replace_num; struct txt *stu = (struct txt *) malloc( sizeof(struct txt)); printf("请输入要替换的节点"); scanf("%d",&replace_num); scanf("%d,%c",&stu->num,&stu->word); struct txt *p0,*p1,*p2; p1=head; p0=stu; if(head==NULL) { head=p0; p0->next=NULL; } else { while((replace_num>p1->num)&&(p1->next!=NULL)) { p2=p1; p1=p1->next; } if(replace_num==p1->num) p1=stu; else printf("无法找到该节点"); } return(head);} //没有编译错误至于逻辑有没有错就不知道了 自己检查吧
[解决办法]
自己调试一下,迟早你要学会的
[解决办法]
对头，只有经过了几次痛苦的调试修改的过程，你就会进步的：）
[解决办法]
do{ printf("\n\t\t 输入你的选择(1-4):");scanf("%d",&c);}while(c<0||c>4);switch(c){case 1: system("cls"); newtxt();break;case 2: system("cls"); displaytxt();break;case 3: system("cls"); modifytxt();break;case 4: exit(0);}
[解决办法]
程序太长了，错误提示呢？可以看提示改的，学会调试吧