我已经发布了MCVE代码,可以将其复制并在任何IDE中运行以检查结果。
链接列表中的输入如下:
Kevlar Epoxy 43.75 18.90 1.48 0.34 0.148 3.93
Kevlar Polycarbonate 43.40 14.00 1.39 0.34 0.110 2.75
Kevlar ABS 43.42 13.94 1.35 0.35 0.112 2.74
我正在寻找的结果是:
Kevlar Epoxy 43.75 18.90 1.48 0.34 0.148 3.93
Kevlar ABS 43.42 13.94 1.35 0.35 0.112 2.74
我得到的结果是:
Kevlar Epoxy 43.75 18.90 1.48 0.34 0.148 3.93
Some random symbols 43.40 14.00 1.39 0.34 0.110 2.75
Kevlar ABS 43.42 13.94 1.35 0.35 0.112 2.74
在此问题中,我试图删除中间节点,因此我不考虑第一个和最后一个节点。请有人让我知道为什么会这样吗?
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct lamina
{
char lamina_fiber[30];
char lamina_matrix[30];
float E1,E2,p,v12,v21,G12;
struct lamina *nextnode;
};
int main()
{
struct lamina *head,*data;
head=(struct lamina *)calloc(1,sizeof(struct lamina));
data=head;
strcpy(data->lamina_fiber,"Kevlar");
strcpy(data->lamina_matrix,"Epoxy");
data->E1= 43.75;
data->E2= 18.90;
data->p= 1.48;
data->v12= 0.34;
data->v21= 0.148;
data->G12= 3.93;
data->nextnode=(struct lamina *)calloc(1,sizeof(struct lamina));
data=data->nextnode;
strcpy(data->lamina_fiber,"Kevlar");
strcpy(data->lamina_matrix,"Polycarbonate");
data->E1= 43.40;
data->E2= 14.00;
data->p= 1.39;
data->v12= 0.34;
data->v21= 0.110;
data->G12= 2.75;
data->nextnode=(struct lamina *)calloc(1,sizeof(struct lamina));
data=data->nextnode;
strcpy(data->lamina_fiber,"Kevlar");
strcpy(data->lamina_matrix,"ABS");
data->E1= 43.42;
data->E2= 13.94;
data->p= 1.35;
data->v12= 0.35;
data->v21= 0.112;
data->G12= 2.74;
data=head;
struct lamina *temp,*anothertemp;
temp=(struct lamina *)calloc(1,sizeof(struct lamina));
anothertemp=(struct lamina *)calloc(1,sizeof(struct lamina));
temp=data;
size_t i=0;
while(i<1)
{
temp=temp->nextnode;
i++;
}
if(i==1)
{
anothertemp=temp->nextnode;
anothertemp=temp;
free(temp);
}
for(int i=0;i<3;i++)
{
printf("%s %s %5.2f %5.2f %5.2f %5.2f %5.2f %5.2f\n",
data->lamina_fiber,data->lamina_matrix,data->E1,data->E2,data->p,
data->v12,data->v21,data->G12);
data=data->nextnode;
}
}
答案 0 :(得分:2)
strcpy(data->lamina_fiber,"Kevlar");
strcpy(data->lamina_fiber,"Polycarbonate");
应该是
strcpy(data->lamina_fiber,"Kevlar");
strcpy(data->lamina_matrix,"Polycarbonate");
否则,您将打印未初始化的内存(这是“某些随机符号”的原因)
此外,如果要删除第二个节点,则必须修改第一个节点(头):
head->next = head->next->next;
要释放已删除的节点,请首先将head->next
保存到一个临时变量中,最后释放它。