باید اینطوری تعریف کنید و استفاده کنید
#include <stdio.h>
#include <stdlib.h>
typedef struct node {
int x;
struct node *next;
}lnode;
/* This won't change, or we would lose the list in memory */
lnode* root;
int pushBack(lnode* conductor , const int value){
if(root == 0){
root = malloc( sizeof(lnode) );
root->next = NULL;
root->x = 32;
}
conductor = root;
if ( conductor != 0 ) {
while ( conductor->next != 0){
conductor = conductor->next;
}
}
/* Creates a node at the end of the list */
conductor->next = malloc( sizeof(lnode) );
conductor = conductor->next;
if ( conductor == 0 ){
printf( "Out of memory" );
return 0;
}
/* initialize the new memory */
conductor->next = NULL;
conductor->x = value;
return 1;
}
void showList(){
if ( root != 0 ) { /* Makes sure there is a place to start */
while ( root->next != 0 ) {
printf( "%d\n", root->x );
root = root->next;
}
printf( "%d\n", root->x );
}
}
int main()
{
/* This will point to each node as it traverses the list */
lnode *conductor = malloc( sizeof(lnode) );
lnode *conductor2 = malloc( sizeof(lnode) );
lnode *conductor3 = malloc( sizeof(lnode) );
lnode *conductor4 = malloc( sizeof(lnode) );
pushBack(conductor , 42);
pushBack(conductor2 , 52);
pushBack(conductor3 , 62);
pushBack(conductor4 , 72);
showList();
free(root);
return 0;
}
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