为什么这个代码的运行结果是这样,哪里出错了吗??
#include<stdio.h>
#include<stdlib.h>
#define STACK_INIT_SIZE 100
#define STACKINCREMENT 10
typedef struct {
int *base;
int *top;
int stacksize;
}SqStack;
//构造空栈
int initstack (SqStack *s)
{
s->base=(int *)malloc(STACK_INIT_SIZE*sizeof(int));
if(!s->base)
exit(0);
s->top=s->base;
s->stacksize=STACK_INIT_SIZE;
return 0;
}
int push(SqStack *s,int e)
{
if((s->top-s->base)>=s->stacksize){
s->base=(int*)realloc(s->base,(s->stacksize+STACKINCREMENT)*sizeof(int));
if(!(s->base))
exit(1);
s->top=s->base+s->stacksize;
s->stacksize+=STACKINCREMENT;
}
*s->top++=e;
return 0;
}
int stackempty(SqStack *s){
if(s->top==s->base)
return 1;
else return 0;
}
int pop(SqStack *s,int *e){
if(s->top==s->base)
return 1;
*e=*--s->top;
return 0;
}
void conversion (int n)
{
SqStack s;
int e;
initstack(&s);
printf("请输入一个十进制数:");
scanf("%d",&n) ;
while (n){
push(&s,n%8);
n=n/8;
}
printf("该数转换成八进制数为:");
while(!stackempty(&s)) {
pop(&s,&e);
printf("%d",e);
}
}
int main()
{
int n;
SqStack *s;
initstack(s);
conversion(n);
return 0;
}
原代码在这儿