C语言实现栈,存之

╰半橙微兮° 2022-06-01 03:40 196阅读 0赞

/********************************引入头文件**************************************************/
    #include<stdio.h>
    #include<stdlib.h>
    #include<malloc.h>
    
    /**********************************定义*******************************************************/
    /*定义状态码*/ 
    #define OK 0            //正常
    #define ERROR -1        //出错
    #define OVERFLOW -2        //内存申请不成功 
    #define DEFSIZE 10      //栈的默认大小
    #define INCREAMSIZE 10     //每次当栈空间满时，增量
    /* 定义结构体 */
    typedef int Status;     //定义状态 
    typedef int ElemType;      //定义栈内元素类型
    
    //定义栈的的数据结构
    typedef struct{
        ElemType *base;     //栈底指针
        ElemType *top;        //栈顶指针
        int stackSize;        // 栈大小
        int realSize;        // 栈当前大小,可以不定义
    }SqStack;
    
    /*********************************stack操作方法**************************************************/
    
    //初始化一个栈
    Status InitStack(SqStack &sqstack)
    {
        //申请默认栈大小
        sqstack.base = (ElemType*)malloc(DEFSIZE*sizeof(ElemType));
        if(!sqstack.base) exit(OVERFLOW);
    
        sqstack.top  = sqstack.base;
        sqstack.stackSize = DEFSIZE;
        sqstack.realSize = 0;
        return OK;
    }
    
    //进栈
    Status Push(SqStack &sqstack,ElemType &e)
    {
        if(sqstack.top-sqstack.base>=sqstack.stackSize)
        {
            sqstack.base = (ElemType*)realloc(sqstack.base,(sqstack.stackSize+INCREAMSIZE)*sizeof(ElemType));
            //如果申请失败返回溢出
            if(!sqstack.base) exit(OVERFLOW);
            sqstack.top = sqstack.base + sqstack.stackSize;
            sqstack.stackSize = sqstack.stackSize + INCREAMSIZE;
        }
        *sqstack.top++ = e;
        sqstack.realSize++;
        return OK;
    }
    
    //出栈
    Status Pop(SqStack &sqstack,ElemType &e)
    {
        if(sqstack.base==sqstack.top)
        {
            exit(ERROR);
        }
        e = *--sqstack.top;
        sqstack.realSize--;
        return OK;
    }
    
    //得到栈顶元素
    Status GetTop(SqStack &sqstack,ElemType &e)
    {
        if(sqstack.base==sqstack.top)
        {
            exit(ERROR);
        }
        e = *(sqstack.top-1);
        return OK;
    }
    
    //判断栈是否为空
    bool IsEmpty(SqStack &sqstack)
    {
        if(sqstack.realSize>0)
            return false;
        else
            return true;
    }
    
    //销毁栈
    Status DestroyStack(SqStack &sqstack)
    {
        sqstack.top = sqstack.base;
        free(sqstack.base);
        sqstack.realSize = 0;
        sqstack.stackSize = DEFSIZE;
        return OK;
    }
    
    //得到栈的元素个数
    int StackLength(SqStack &sqstack)
    {
        return sqstack.realSize;
    }
    
    /*******************************主函数************************************************/
    int main(int argc, char *argv[])
    {
    
        SqStack sqstack;
        int N = 0;         //用于记录输入栈的个数
        int temp = 0;    //用于临时存栈
    
        /****初始化栈***/
        InitStack(sqstack);
        printf("初始化时，堆的大小为：%d\n",sqstack.stackSize);
    
        /**根据输入来填充栈**/
        printf("请入你想要输入几个数据进栈：");
        scanf("%d",&N) ;
        while(N--)
        {
            scanf("%d",&temp);
            Push(sqstack,temp);
            printf("进栈的大小为：%d\t",temp);
            printf("压栈后，栈的大小为：%d,%d\n",temp,sqstack.stackSize);
    
        }
        /**得到栈顶元素**/
        GetTop(sqstack,temp);
        printf("得到栈顶元素为：%d",temp);
    
    
        /**将栈的元素逐一出栈**/
    /* printf("现在开始逐一出栈：\n"); while(!IsEmpty(sqstack)){ //如果栈不为空则进行出栈 Pop(sqstack,temp); printf("%d \t",temp); } printf("\n栈输出完成！！\n"); */
    
        DestroyStack(sqstack);
        printf("销毁栈完成！！\n");
        scanf("%d",&temp);
    
        return 0;
    }