给予无限循环请帮助 [英] giving infinite loop please help

问题描述

#include <stdio.h>
#include <stdlib.h>

struct node{
int data;
struct node* next;
};
struct node* head; //GLOBAL DECLARATION//
void insert(int x);
void print();
int main()
{    int i,n,x;
    head=NULL; //EMPTY LIST//
    printf("how many number?");
     scanf("%d",&n);
    for(i=0;i<n;i++){>
    printf("ENTER THE NUMBER:\n");
    scanf("%d",&x);
    insert(x);
    print();
    } getch();
}
void insert(int x)
{
   struct node* temp=(struct node*)malloc(sizeof(struct node));
    temp->data=x;
    temp->next=head ;
    head=temp;
   }
void print()
{
    struct node* temp=head; //TEMP IS LOCAL VARIABLE//
    printf("LIST IS:");
    if (temp->next!=NULL)
    {
	printf("%d",temp->data);
	if(temp->next->next==NULL)
	printf("%d",temp->next->data);
	print(temp->next);
    }
    print("\n");

}

[edit]已添加代码块 - OriginalGriff [/ edit]

[edit]Code block added - OriginalGriff[/edit]

推荐答案

嗯。

您确定要从内部打电话打印吗？

Um.
Are you sure you want to call print from within itself?

void print()
{
    struct node* temp=head; //TEMP IS LOCAL VARIABLE//
    printf("LIST IS:");
    if (temp->next!=NULL)
    {
    printf("%d",temp->data);
    if(temp->next->next==NULL)
    printf("%d",temp->next->data);
    print(temp->next);   <<<<<--- What does this call?
    }
    print("\n");  <<<<<--- What does this call?

}

试试这个：

Try this:

void print()
{
    struct node* temp=head; //TEMP IS LOCAL VARIABLE//
    printf("LIST IS:");
    if (temp->next!=NULL)
    {
    printf("%d",temp->data);
    if(temp->next->next==NULL)
    printf("%d",temp->next->data);
    printf(temp->next);   
    }
    printf("\n");
}

试试这个：

你的打印功能仍然无效（它需要一个循环）但至少它不会给你堆栈溢出......：笑：

Try this:
Your print function still doesn't work (it needs a loop) but at least it wonlt give you stack overflow... :laugh:

我在这里可以看到两个问题：

1.你在 print（）函数应该是 printf

2.你在递归循环中运行print（）但是temp总是初始化为head in你从一开始就开始递归，而不是从最后一次印刷开始...

试试这个：



There are two problems I can see here:
1. Your last print call inside the print() function should have been printf
2. You are running print() in a recursive loop but temp always initialized to head so in ever recursion you start from the beginning and not from the last already printed...
Try this:

int main()
{
    int i,n,x;
    head=NULL; //EMPTY LIST//
    printf("how many number?");
    scanf("%d",&n);
    for(i=0;i<n;i++){>
    printf("ENTER THE NUMBER:\n");
    scanf("%d",&x);
    insert(x);
    print(head); // !!! change here !!!
    } getch();
}

void print(node* root)
{
    struct node* temp = root; //TEMP IS LOCAL VARIABLE// // !!! change here !!!
    printf("LIST IS:");
    if (temp->next!=NULL)
    {
    printf("%d",temp->data);
    if(temp->next->next==NULL)
    printf("%d",temp->next->data);
    print(temp->next);
    }
    printf("\n"); // !!! change here !!!
}

#include

#include



struct node {

int data;

struct node * next;

};

struct node * head; //全局声明//

void insert（int x）;

void print（）;

int main（）

{int i，n，x;

head = NULL; //清空名单//

printf（多少个数字？）;

scanf（％d，&n）;

for（i = 0; i

printf（输入数字：\ n）;

scanf（％d，&x）;

insert（x）;

print（）;

} getch（）;

}

void insert（int x）

{

struct node * temp =（struct node *）malloc（sizeof（struct node））;

temp-> data = x;

temp-> next = head;

head = temp;

}

void print（）

{

struct node * temp = head; // TEMP IS LOCAL VARIABLE //

printf（ 列表是：）;

while（temp！= NULL）

{printf（％d，temp-> data）;

temp = temp-> next;

}

printf（\ n）;

}

#include
#include

struct node{
int data;
struct node* next;
};
struct node* head; //GLOBAL DECLARATION//
void insert(int x);
void print();
int main()
{ int i,n,x;
head=NULL; //EMPTY LIST//
printf("how many number?");
scanf("%d",&n);
for(i=0;i
printf("ENTER THE NUMBER:\n");
scanf("%d",&x);
insert(x);
print();
} getch();
}
void insert(int x)
{
struct node* temp=(struct node*)malloc(sizeof(struct node));
temp->data=x;
temp->next=head ;
head=temp;
}
void print()
{
struct node* temp=head; //TEMP IS LOCAL VARIABLE//
printf("LIST IS:");
while(temp!=NULL)
{ printf("%d",temp->data);
temp=temp->next;
}
printf("\n");
}

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