// Opration Prior New.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include
#include
#include
#include
#include
int check=10;
int change(char *cd1,int a){
int i,o=0,c,j;
for(i=0;i c=1;
for(j=a-1;j>=i;j--){
if(j==i) c=1*c;
else c=c*10;
}
o=o+(cd1[i+1]-48)*c;
}
return(o);
}
int Count(int a,int b,char c){
int dd;
switch(c){
case '*':dd=a*b;break;
case '/':dd=a/b;break;
case '+':dd=a+b;break;
case '-':dd=a-b;break;
default :printf("Error!");
}
return(dd);
}
char compare(char a,char b)
{
if(a=='*'&&b=='/') return('>');
if(a=='/'&&b=='*') return('>');
if(a=='+'&&b=='-') return('>');
if(a=='-'&&b=='+') return('>');
if(a=='*'&&b=='+') return('>');
if(a=='*'&&b=='-') return('>');
if(a=='/'&&b=='+') return('>');
if(a=='/'&&b=='-') return('>');
if(a=='+'&&b=='*') return(' if(a=='+'&&b=='/') return(' if(a=='-'&&b=='*') return(' if(a=='+'&&b=='*') return(' if(a=='*'&&b=='(') return(' if(a=='/'&&b=='(') return(' if(a=='+'&&b=='(') return(' if(a=='-'&&b=='(') return(' if(a=='*'&&b==')') return('>');
if(a=='/'&&b==')') return('>');
if(a=='+'&&b==')') return('>');
if(a=='-'&&b==')') return('>');
if(a=='('&&b=='*') return(' if(a=='('&&b=='/') return(' if(a=='('&&b=='+') return(' if(a=='('&&b=='-') return(' if(a==')'&&b=='*') return('>');
if(a==')'&&b=='/') return('>');
if(a==')'&&b=='+') return('>');
if(a==')'&&b=='-') return('>');
if(a=='*'&&b==';') return('>');
if(a=='/'&&b==';') return('>');
if(a=='+'&&b==';') return('>');
if(a=='-'&&b==';') return('>');
if(a=='#'&&b=='*') return(' if(a=='#'&&b=='/') return(' if(a=='#'&&b=='-') return(' if(a=='#'&&b=='+') return(' if(a=='#'&&b==';') return('=');
if(a=='('&&b=='(') return(' if(a==')'&&b==')') return('>');
if(a==')'&&b=='#') return('>');
if(a=='*'&&b=='*') return('>');
if(a=='/'&&b=='/') return('>');
if(a=='+'&&b=='+') return('>');
if(a=='-'&&b=='-') return('>');
if(a=='('&&b==')') return('=');
if(a==')'&&b==';') return('>');
return 0;
}
int main(int argc, char* argv[])
{
FILE *fp,*fq;
char c1[100],c;
char chuan[100];
int c2[100],i=0,j=0,result,ii=0,a,b;
fp=fopen("document1.txt","wr");
if(!fp) printf("Open File Error!");
else
{
printf("Please Input biao da shi :\n");//以“；#”结尾，不能以(开头
while((c=getchar())!='#') fprintf(fp,"%c",c);
fclose(fp);
// cifa();
// yufa();
if(check==10)
{
// printf("yufa OK!");
fp=fopen("document1.txt","r");
fq=fopen("document3.txt","w");
if(!fq||!fp) printf("file not open!");
else
{
fscanf(fp,"%c",&c);
fprintf(fq," %c ",c);
// fscanf(fp,"%c",&c);
while(c!=';')
{
fscanf(fp,"%c",&c);
while(c!='+'&&c!='-'&&c!='*'&&c!='/'&&c!='('&&c!=')'&&c!=';')
{
fprintf(fq,"%c",c);
fscanf(fp,"%c",&c);
}
fprintf(fq," %c ",c);
}
fclose(fp);
fclose(fq);
}
}
else
{
printf("yufa Error!");
}
}
for(i=0;i c1[j++]='#';
fp=fopen("document3.txt","r");
fscanf(fp,"%c",&c);
i=0;
while(c!=';'||c1[j-1]!='#')
{
if(c!='*'&&c!='/'&&c!='+'&&c!='-'&&c!='('&&c!=')'&&c!=';'&&c!=' ')
{
i=0;
while(c>='0'&&c {
i++;
chuan[i]=c;
fscanf(fp,"%c",&c);
}
ii++;
c2[ii]=change(chuan,i);
}
if(c==' ') fscanf(fp,"%c",&c);
if(c=='*'||c=='/'||c=='+'||c=='-'||c=='('||c==')'||c==';')
{
switch(compare(c1[j-1],c))
{
case ' c1[j++]=c;
fscanf(fp,"%c",&c);
break;
case '=':
j=j-1;
fscanf(fp,"%c",&c);
break;
case '>':
if(ii>=2)
{
a=c2[ii];ii=ii-1;
b=c2[ii];
result=Count(b,a,c1[--j]);
c1[j]=c;
c2[ii]=result;
break;
}
else
{
c1[j++]=c;
fscanf(fp,"%c",&c);
break;
}
}
}
}
printf("\nresult->%d\n",result);
return 0;
}
