用栈实现十进制转换为二进制

#include<stdio.h>
#include<malloc.h>
#include<math.h>
#include<string.h>
#include "process.h"

#define SIZE 100
#define STACKINCREMENT 10
#define OK 1
#define ERROR 0
#define TRUE 1
#define FALSE 0

typedef int Status;

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

SqStack S; //定义全局变量

Status InitStack(SqStack *S)
{
    S->base=(SElemType *)malloc(SIZE*sizeof(SElemType));
    if(!S->base) exit(OVERFLOW);
    S->top=S->base;
    S->stacksize=SIZE;
    return OK;
}
Status Push(SqStack *S,SElemType e)
{
    if(S-&