c - 我的代码有什么问题吗？

Question

最近我一直在制作堆栈项目，但我的推送节点代码有问题:

void push(struct stackNode *Stackptr , int data)
{
     struct stackNode *conductor;

     conductor = malloc(sizeof(struct stackNode));
     if(conductor !=NULL)
     {
                conductor->data=data;
                conductor->nxt=*Stackptr;
                Stackptr = conductor ;
                  }     
     else{
         printf("Wrong insertion"); 
          }

     }

但是它不会编译。如果您想在这里查看我的其余代码，它是:

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

struct stackNode
{
       int data;
       struct stackNode *nxt;
       };

struct stackNode *Stack;


void instructions()
{
     printf("        Please Select a Number to do the following\n\n");
     printf("              [1]Push a value\n");
     printf("              [2]Pop a value\n");
     printf("              [2]Peek a node\n");
     printf("              [3]Display\n");
     printf("              [4]Exit\n               ");
     }

     int main ()
     {
         int value; 
         int choice;
         Stack = NULL;

         instructions();

     do
     {
       scanf("%d",&choice);
         system("cls");


         if(choice == 1)
             {
                 printf("Enter your Desired Digit: ");

                                       }

              if(choice == 2)
              {
                        printf(" "); 
                        }       
              if(choice == 3)
              {

                        printf(" ");
                        }
                if(choice == 4 )
                {

                          printf("bye!");
                          return 0;
                          }      



         }while(choice !=4);

         getch();
         }

    void push(struct stackNode *Stackptr , int data)
    {
         struct stackNode *conductor;

         conductor = malloc(sizeof(struct stackNode));
         if(conductor !=NULL)
         {
                    conductor->data=data;
                    conductor->nxt=*Stackptr;
                    Stackptr = conductor ;
                      }     
         else{
             printf("Wrong insertion"); 
              }

         }

Answer 1

在推送函数中，您分配的是堆栈节点，而不是指向堆栈节点的指针。

这是错误:

test.c:76:31: error: incompatible types when assigning to type ‘struct stackNode *’ from type ‘struct stackNode’

删除 * 会分配指针，这就是您想要的。

所以这有效:

conductor->nxt=Stackptr;

但是，该程序还存在其他问题。