#define MAXSTACKSIZE 20
#define STACKCREMENT 5
#include<iostream>
#include<malloc.h>

using namespace std;

typedef struct {
  int *base;
  int *top;
  int stacksize;
}SqStack;

int InitStack(SqStack &S) {
  S.base = (int*)malloc(MAXSTACKSIZE * sizeof(SqStack));
  if (!S.base)
  {
    exit(OVERFLOW);
  }
  S.top = S.base;
  S.stacksize = MAXSTACKSIZE;
  return 1;
}

int Push(SqStack &S, int e) {
  if (S.top - S.base == S.stacksize) {
    S.base = (int *)realloc(S.base, (S.stacksize + STACKCREMENT) * sizeof(SqStack));
    if (!S.base)
    {
      cout << "空间分配失败" << endl;
      exit(OVERFLOW);
    }
    S.stacksize += STACKCREMENT;
  }
  *S.top++ = e;
  return 1;
}

int Pop(SqStack &S, int &e) {
  if (S.top == S.base)
    return 0;
  e = *--S.top;
  return 1;
}

int DecimalismToOctal(SqStack &S, int decimalism, int &octal) {
  int remainder;
  int r;
  octal = 0;
  do{
    remainder = decimalism % 8;
    Push(S, remainder);
    decimalism /= 8;
  } while (decimalism);
  
  while (S.top != S.base)
  {
    octal *= 10;
    Pop(S, r);
    octal += r;
    
  }
  return 1;
}

void main() {
  SqStack S;
  InitStack(S);
  int decimalism_a = 160;
  int octal_a;
  DecimalismToOctal(S, decimalism_a, octal_a);

  cout << "将十进制" << decimalism_a << "转化为八进制后的值为" << octal_a << endl;

}

执行结果

【数据结构周周练】004顺序栈与链栈 -数制转换_ooc

3、链栈实现

代码

#include<iostream>
#include<malloc.h>

using namespace std;

typedef struct LNode {
  int data;
  struct LNode *next;
}LNode,  *LinkStack;

int InitStack(LinkStack &LS) {
  LS = (LinkStack)malloc(sizeof(LNode));
  if (!LS)
  {
    cout << "空间分配失败" << endl;
    return OVERFLOW;  
  }
  LS->next = NULL;
  return 1;
}

int Push(LinkStack &LS, int e) {
  LS->data = e;
  LinkStack p = (LinkStack)malloc(sizeof(LNode));
  p->next = LS;
  LS = p;
  return 1;
}

int Pop(LinkStack &LS, int &e) {
  if (LS->next)
  {
    LinkStack p = LS->next;
    e = p->data;
    LS->next = p->next;
    free(p);
    return 1;
  }
  return 0;
}

int DecimalismToOctal(LinkStack &LS, int decimalism, int &octal) {
  int r;
  octal = 0;
  while (decimalism)
  {
    r = decimalism % 8;
    decimalism /= 8;
    Push(LS, r);
  }
  while (LS->next)
  {
    octal *= 10;
    Pop(LS, r);
    octal += r;
    
  }
  return 1;
}
void main() {
  LinkStack S;
  InitStack(S);
  int decimalism_a = 120;
  int octal_a;
  DecimalismToOctal(S, decimalism_a, octal_a);

  cout << "将十进制" << decimalism_a << "转化为八进制后的值为" << octal_a << endl;
}