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  • C++随笔

    #include <stdio.h>
    #include <stdlib.h>
    #include<assert.h>
    /* run this program using the console pauser or add your own getch, system("pause") or input loop */
    typedef struct{
     int *elems;
     int loglength;
     int alloclength;
    }stack;
    void StackNew(stack*s);
    void StackDispose(stack*s);
    void StackPush(stack*s,int volue);
    int StackPop(stack*s);
    void StackPush(stack*s,int value)
    {
     if(s->loglength==s->alloclength)
     {
      s->alloclength*=2;
      s->elems=realloc(s->elems,s->alloclength*sizeof(int));
      assert(s->elems!=NULL); 
     }
     s->elems[s->loglength]=value;
     s->loglength++;
     }
    void StackNew(stack*s)
    {
     s->loglength=0;
     s->alloclength=4;
     s->elems=malloc(4*sizeof(int));
     assert(s->elems!=NULL);
    }
    int StackPop(stack*s)
    {
     assert(s->loglength>0);
     s->loglength--;
     return s->elems[s->loglength];
    }
    void StackDispose(stack*s)
    {
     free(s->elems);
    }
    int main()
    {
     stack s;
     int i;
     StackNew(&s);
     for(i=0;i<4;i++)
     StackPush(&s,i);
     for(i=0;i<4;i++)
     printf("%d",StackPop(&s));
     StackDispose(&s);
    }
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  • 原文地址:https://www.cnblogs.com/shiheyuanfang/p/11921614.html
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