char * name;
struct node *next;
}Node; // 定义一个结构体
void myfree(Node * pHead){ //从头指针开始释放
while (pHead != NULL) {
Node *ptemp = pHead->next;
free(pHead->name);
free(pHead);
pHead = ptemp;
}
} //释放申请过的内存
int main(int argc, const char * argv[]) {
Node *phead = NULL; //定义头指针
Node *ptail = NULL; //定义尾指针
for (int i = 0; i<5; i++) {
Node *ptemp = (Node*)malloc(1*sizeof(Node)); //申请一个结构体大小的空间
if (ptemp == NULL) {
myfree(phead);
exit(EXIT_FAILURE);
}
printf("请输入姓名：");
char * name=NULL; //临时存放name
char c;
int total =0; // 用来计数 当前存到第几个
while (1) {
c=getchar();
if (c==' ') {
break;
}
if (name == NULL) { // 如果第一次存放
name = (char*)malloc(1*sizeof(char));
if(name==NULL){
free(ptemp);
myfree(phead);
exit(EXIT_FAILURE);
}
}else{
name = (char*)realloc(name,(total+1)*sizeof(char) );
if (name == NULL) {
free(ptemp);
myfree(phead);
exit(EXIT_FAILURE);
}
}
*(name+total)=c; // 依次存放
total++;
}
ptemp->name = name; //指向临时的name
ptemp->next = NULL;
if (phead==NULL) { //如果头指针是空的 头指针尾指针指向第一个
phead = ptemp;
ptail = ptemp;
}else{
ptail->next = ptemp; // 衔接之后 尾指针移动
ptail = ptemp;
}
}
Node * ptemp = phead; //防止头指针跑，找不到后面的，所以定义临时的
while (ptemp!=NULL) {
printf("%s ",ptemp->name);
ptemp=ptemp->next;
}
myfree(phead);
return 0;
}