求助!中缀转后缀表达式,代码每次遇到符号都会出错。求解决!!!
#include <stdio.h>#include <stdlib.h>
#include <ctype.h>
#define STACK_INIT_SIZE 20
#define STACKINFREMENT10
#define MAXBUFFER 10
typedef double 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 +STACKINFREMENT)*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()
{
sqStack s;
char c,e;
InitStack( &s );
printf("请输入中缀表达式,以#作为结束:");
scanf("%c",&c);
while( c != '#')
{
if(c >= '0' && c <= '9')
{
printf("%c",c);
scanf("%c",&c);
if(c < '0' || c > '9')
{
printf(" ");
}
}
else if( ')' == c)
{
Pop(&s ,&e);
while( '(' != e)
{
printf("%c",e);
Pop(&s,&e);
}
}
else if('+' == c || '-' == c)
{
if(!StackLen(s))
{
Push(&s,c);
}
else
{
do
{
Pop(&s,&e);
if('(' == e)
{
Push(&s,e);
}
else
{
printf("%c",e);
}
}while( StackLen(s) && '(' != e);
Push(&s,c);
}
}
else if ('*' == c || '/' == c || '(' == c)
{
Push(&s,c);
}
else if( '#' == c)
{
break;
}
else
{
printf("\n输入出错!");
return -1;
}
scanf("%c",&c);
}
while ( StackLen(s))
{
Pop(&s,&e);
printf("%c ",e);
}
return 0;
}
哪位大佬看看是哪块出错了? 运行就会显示这个!
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