c - 在 C 中实现 Stack 时出现奇怪的错误

Question

我试图在 C 中实现堆栈，但它在我的 MinGw 编译器中出现了奇怪的错误

 gcc -Wall -o stack stack.c 

堆栈.c

#include "stack.h"
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>


Stack *create(int size) {
    Stack *result;
    result = (Stack *) malloc(  sizeof(Stack) * size );
    assert(result != NULL);

    result -> file = result;
    result -> maxAllocate = size;
    result -> top = -1;
    return result;
}

堆栈.h

#define MAX_SIZE 1024

typedef struct {
    void **file;    
    int top;     
    int maxAllocate; // current size of array allocated for stack
} Stack;

Stack *create(int size);        
int   push(Stack *s, void *x);  
void  *pop(Stack *s);           
int   isEmpty(Stack *s);        

错误

C:\test>gcc -Wall -o stack stack.c
stack.c: In function 'create':
stack.c:26:17: warning: assignment from incompatible pointer type [enabled by de
fault]
c:/mingw/bin/../lib/gcc/mingw32/4.6.2/../../../libmingw32.a(main.o): In function
 `main':
C:\MinGW\msys\1.0\src\mingwrt/../mingw/main.c:73: undefined reference to `WinMai
n@16'
collect2: ld returned 1 exit status

Answer 1

使用 gcc -Wall -o stack stack.c 你只编译 stack.c (其中有 o main 函数)但是对于一个正常运行的应用程序你也将需要一个 main 函数，作为主入口点:http://en.wikipedia.org/wiki/Entry_point