可以编一个计算器的c语言程序给我吗

答案：应该可以的！
#include<stdio.h> 
#include<conio.h> 
#include<math.h> 
#include<stdlib.h> 
#define UNKNOWN_CHAR 2 
#define DIVISOR_IS_ZERO 3 
#define FALSE 0 
#define TRUE 1 
/*定义结构,主要用于GetString函数，可以不管它*/ 
typedef struct string 
{char str; 
 struct string *next; 
}string; 

/*函数声明*/  

/*可以无限接受字符,输入一个字符就给你个空间,返回一个字符串首地址 . */ 
/*这个函数可以看成普通的scanf()*/  
char *GetString(); 
/*从字符串str第*rank个字符开始分析直到遇到 ')' or ']' or '}' or '\0' . */ 
/*有错误就把错误代号装在*errorNum中,返回从中计算出的值*/  
double GetASResultOf(char * str, int *rank, int *errorNum); 
/*从字符串str第*rank个字符开始分析直到遇到不符合要求的字符,返回这个单位值.*/ 
/*如:str="12+sin(30)+[12+cos(60)]" 
 GetUnitageOf(str,0,errorNum)=12 
 GetUnitageOf(str,3,errorNum)=0.5 
 GetUnitageOf(str,11,errorNum)=12.5 */ 
double GetUnitageOf(char * str, int *rank, int *errorNum);  
int main() 
{ 
 /*定义变量*/  
 double value; 
 int rank=0; 
 int errorNum=TRUE; 
 char * str; 

 /*接收字符*/ 
 printf("counter v1.0\n"); 
 printf("Made by PT\n"); 
 printf("Date 2005-07-16\n\n"); 
 printf("Please input your arithmetic:\n"); 
 str=GetString(); 

 /*调用处理函数,*/ 
 value = GetASResultOf(str, &rank, &errorNum); 
  
 /*错误处理(没完善）*/ 
 if (errorNum==TRUE) printf("The result is: %lf\n",value, rank); 
 else if (errorNum==UNKNOWN_CHAR) printf("char error!\n"); 
 else if (errorNum==DIVISOR_IS_ZERO) printf("Divisor could not be 0\n"); 
 else printf("Other error\n"); 

 getch(); 
 return 0; 
} 


/*0==[=========>无限动态字符接受函数*/ 
char *GetString() 
{ 
 char *CharToString(string * sHead, int arraySize); 
 int arraySize=0;  
 string *s; 
 string *sHead; 
  
 s = (string *)malloc(sizeof(string)); 
 sHead = s; 
 s->str = getchar(); 
 arraySize++; 
  
 while((s->str)!='\n') 
 { 
 arraySize++; 
 s->next=(string *)malloc(sizeof(string)); 
 s=s->next; 
 s->str=getchar(); 
 } 
  
 return CharToString(sHead, arraySize); 
} 

char *CharToString(string * sHead, int arraySize) 
{ 
 char *strArray; 
 string *s=sHead; 
 int i=0; 
 strArray = (char*)malloc(arraySize*sizeof(char)); 
  
 while(i<arraySize) 
 { 
 if (s->str=='=' || s->str=='\n') break; 
 if (s->str!=32) strArray[i++]=s->str; 
 s=s->next; 
 } 
 strArray[i]='\0'; 
 return strArray; 
}  
 /*0==[=========> 得到一个单位的值*/ 
double GetUnitageOf(char * str, int *rank, int *errorNum) 
{ 
 double CharToNum(char * str, int *rank); 
 double value;  
  
 /*如果是数字或负号就返回这个数字*/  
 if ((str[*rank]>=48 && str[*rank]<=57) || (str[*rank]=='-')) 
 {if (str[*rank]=='-') {(*rank)++;value = (-1)*GetUnitageOf(str, rank,errorNum);} 
 else {value = CharToNum(str, rank);}} 
  
 /*如果是括号就用GetASResultOf取得括号里面的值并返回*/ 
 else if (str[*rank]=='(' || 
 str[*rank]=='[' || 
 str[*rank]=='{' ) 
 {(*rank)++; 
 value = GetASResultOf(str, rank, errorNum);} 
  
 /*返回sin(x)*/ 
 else if (str[*rank]=='s' && 
 str[(*rank)+1]=='i' && 
 str[(*rank)+2]=='n') 
 { (*rank)=(*rank)+3; 
 value = GetUnitageOf(str, rank, errorNum); 
 value = sin(value); 
 } 
  
 /*返回cos(x)*/ 
 else if (str[*rank]=='c' && 
 str[(*rank)+1]=='o' && 
 str[(*rank)+2]=='s') 
 {*rank=*rank+3; 
 value = cos(GetUnitageOf(str, rank, errorNum));} 
  
 /*返回tan(x)*/ 
 else if (str[*rank]=='t' && 
 str[(*rank)+1]=='a' && 
 str[(*rank)+2]=='n') 
 {*rank=*rank+3; 
 value = tan(GetUnitageOf(str, rank, errorNum));} 
 /*还可以加一些的,懒得加了*/  
  
 /*defult:处理错误*/ 
 else {*errorNum = UNKNOWN_CHAR;value = 0;} 
  
 /*检查errorNum*/ 
 if (*errorNum==TRUE){return value;} 
 else return FALSE; 
} 

/*0==[=========>这个是把字符转换成数字的函数,只在GetUnitageOf()里用*/ 
/*数字不能超过15个，其余的将被抹去.*/ 
double CharToNum(char * str, int *rank) 
{ 
 int j=0; 
 double value=0; 
  
 while((str[*rank]>=48 && str[*rank]<=57) || (str[*rank]==46)) 
 { 
 if (str[*rank]!='.') 
 {if ((j++)<=15) {value = value*10+(str[*rank]-48);}} 
 else 
 {if (j<=15) 
 { 
 for ((*rank)++,j=1; (str[*rank]>=48 && str[*rank]<=57 && str[*rank]!='\0'); (*rank)++, j++) 
 {value = value+(str[*rank]-48)*pow(0.1,j);} 
 return value; 
 } 
 } 
  
 (*rank)++; 
 } 
 return value; 
}  
 /*0==[=========>这个函数写的太复杂了，实在不好作解释，反正是在GetPDResultOf 
函数和GetUnitageOf函数之间转啊转的*/ 
/*简单地说就是把str中第一个加减号前的式子算出来放在value变量中.再用函数  
GetPDResultOf算出直到二个加减号前的式子然后与value相加或相减放在 
变量value中,以此类推,直到遇上 ')' or ']' or '}' or '\0' */ 
double GetASResultOf(char * str, int *rank, int *errorNum) 
{ 
 double GetPDResultOf(char * str, int *rank, int *errorNum); 
 double value; 
 double dwIf_Zero; 
  
 /*遇上 ')' or ']' or '}' or '\0' 就返回*/  
 while (str[*rank]!=')' && 
 str[*rank]!=']' && 
 str[*rank]!='}' && 
 str[*rank]!='\0') 
 { 
 if ((str[*rank]>=48 && str[*rank]<=57) || 
 str[*rank]=='s' || 
 str[*rank]=='c' || 
 str[*rank]=='t') 
 { 
 if ((str[*rank-1]==')' || 
 str[*rank-1]==']' ||  
 str[*rank-1]=='}') && 
 *rank!=0)  
 {value = value*GetUnitageOf(str, rank, errorNum);}  
 else  
 {value = GetUnitageOf(str, rank, errorNum);}  
 } 
  
 else if (str[*rank]=='+') 
 {if (str[*rank-1]!= '(' && 
 str[*rank-1]!= '[' && 
 str[*rank-1]!= '{' && (*rank)!=0 ) 
 {(*rank)++; value = value + GetPDResultOf(str, rank, errorNum);} 
 else {*errorNum=UNKNOWN_CHAR;return 0;}} 
  
  
 else if (str[*rank]=='-') 
 {if (str[*rank-1]!= '(' && 
 str[*rank-1]!= '[' && 
 str[*rank-1]!= '{' && (*rank)!=0 ) 
 {(*rank)++; value = value - GetPDResultOf(str, rank, errorNum);} 
 else {value = GetUnitageOf(str, rank, errorNum);}} 
  
 else if (str[*rank]=='*') 
 {if (str[*rank-1]!= '(' && 
 str[*rank-1]!= '[' && 
 str[*rank-1]!= '{' && (*rank)!=0 ) 
 {(*rank)++; value = value * GetUnitageOf(str, rank, errorNum);} 
 else {*errorNum=UNKNOWN_CHAR;return 0;}} 

 else if (str[*rank]=='/') 
 {if (str[*rank-1]!= '(' && 
 str[*rank-1]!= '[' && 
 str[*rank-1]!= '{' && (*rank)!=0 ) 
 {(*rank)++; 
 dwIf_Zero=GetUnitageOf(str, rank, errorNum); 
 if (dwIf_Zero==0) {*errorNum=DIVISOR_IS_ZERO;return 0;} 
 else value = value /dwIf_Zero;} 
 else {*errorNum=UNKNOWN_CHAR;return 0;}} 

 else if (str[*rank]== '(' || 
 str[*rank]== '[' || 
 str[*rank]== '{' ) 
 {if (str[*rank-1]!= '(' && 
 str[*rank-1]!= '[' && 
 str[*rank-1]!= '{' && (*rank)!=0 ) 
 {(*rank)++; value = value*GetASResultOf(str, rank, errorNum);} 
 else {value = GetUnitageOf(str, rank, errorNum);}} 


 else {*errorNum=UNKNOWN_CHAR;return FALSE;} 


 if (*errorNum!=TRUE) return FALSE; 
 } 
 (*rank)++; 
 return value; 
} 

double GetPDResultOf(char * str, int *rank, int *errorNum) 
{ 
 double value; 
 double dwIf_Zero; 
 value = GetUnitageOf(str, rank, errorNum); 
 if (str[*rank]=='\0') return value; 
  
 while (str[*rank]!='+' && 
 str[*rank]!='-' && 
 str[*rank]!=')' &&

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