栈的运用:二进制转十进制
#include<stdio.h>#include<stdlib.h>
#include<math.h>
#define STACK_INIT_SIZE 20
#define STACKINCREAMENT 10
typedef char ElemType;
typedef struct
{
ElemType *base;
ElemType *top;
int stacksize;
}sqStack;
void InitStack(sqStack *s)
{
s->base = (ElemType *)malloc(STACK_INIT_SIZE * sizeof(ElemType));
if (!s->base)
{
exit(0);
}
s->top = s->base;
s->stacksize = STACK_INIT_SIZE;
}
void Push(sqStack *s, ElemType e)
{
if (s->top - s->base >= s->stacksize)
{
s->base = (ElemType *)realloc(s->base, (s->stacksize + STACKINCREAMENT) * sizeof(ElemType));
if ( !s->base )
{
exit(0);
}
}
*(s->top) = e;
++s->top;
}
void Pop(sqStack *s, ElemType *e)
{
if (s->top == s->base)
{
return;
}
*e = *--(s->top);
}
int StackLen(sqStack s)
{
return (s.top - s.base);
}
int main()
{
ElemType c;
sqStack s;
int len, i, sum = 0;
printf("请输入二进制数,输入#表示输入结束! \n");
scanf_s("%c", &c);
while (c != '#')
{
Push(&s, c);
scanf_s("%c", &c);
}
getchar();
len = StackLen(s);
printf("栈的当前容量为: %d\n", len);
for (i = 0; i < len; i++)
{
Pop(&s, &c);
sum = sum + (c - 48) * 2^i;
}
printf("转换为十进制数是: %d\n", sum);
return 0;
}
请问为什么输入完数字后运行错误??? 由于s->top指向的是数据的上一个位置,所以当容量为s->stacksize - 1 的时候就应该扩容了 BeatificDevin 发表于 2014-12-22 14:02
由于s->top指向的是数据的上一个位置,所以当容量为s->stacksize - 1 的时候就应该扩容了
能不能具体说一下是哪条语句错误了,找了一遍还是没有找到
if (s->top - s->base >= s->stacksize)
难道是这句错了????小甲鱼老师在视频里就是这样的呀???{:5_92:} #include<stdio.h>
#include<stdlib.h>
#include<math.h>
#define STACK_INIT_SIZE 20
#define STACKINCREAMENT 10
typedef char ElemType;
typedef struct
{
ElemType *base;
ElemType *top;
int stacksize;
}sqStack;
void InitStack(sqStack *s)
{
s->base = (ElemType *)malloc(STACK_INIT_SIZE * sizeof(ElemType));
if (!s->base)
{
exit(0);
}
s->top = s->base;
s->stacksize = STACK_INIT_SIZE;
}
void Push(sqStack *s, ElemType e)
{
if (s->top - s->base >= s->stacksize - 1)
{
s->base = (ElemType *)realloc(s->base, (s->stacksize + STACKINCREAMENT) * sizeof(ElemType));
if ( !s->base )
{
exit(0);
}
}
*(s->top) = e;
s->top++;
}
void Pop(sqStack *s, ElemType *e)
{
if (s->top == s->base)
{
return;
}
*e = *--(s->top);
}
int StackLen(sqStack s)
{
return (s.top - s.base);
}
int main()
{
ElemType c;
sqStack s;
int len,i;
int sum = 0;
InitStack(&s);
printf("请输入二进制数,输入#表示输入结束! \n");
fflush(stdin);
scanf("%c",&c);
while (1)
{
if(c == '\n')
break;
Push(&s, c);
scanf("%c",&c);
}
len = StackLen(s);
printf("栈的当前容量为: %d\n", len);
for (i = 0; i < len; i++)
{
Pop(&s, &c);
sum = sum + (c - 48) * pow(2,i);
}
printf("转换为十进制数是: %d\n", sum);
return 0;
} 帮你修改好了{:1_1:}
你的程序主要有以下问题
1、你在主函数中没有初始化
2.次方要用pow函数。2^3这种格式编译器不认得
其他都挺好的{:1_1:} 输入回车表示结束,提示忘记改了:ton:
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