include<iostream>
include<vector>
include<stack>
using namespace std;
int main(){
//转换后的数据
vector<char> transData;
//临时栈
stack<char> tempData;
//将输入的数据依次读入然后处理放到一个数组里面
char temp;
cin>>temp;
while( temp != '#'){
while( temp>='0' && temp<='9'){
transData.push_back(temp);
cin>>temp;
if(temp<'0' || temp>'9'){
transData.push_back(' ');
break;
}
}
if(temp == ')'){
while(tempData.top() != '('){
transData.push_back(tempData.top());
tempData.pop();
}
tempData.pop();
}
else if(temp == '+' || temp == '-'){
while(tempData.size()&&tempData.top() != '('){
transData.push_back(tempData.top());
tempData.pop();
}
tempData.push(temp);
}
else if(temp == '*' || temp == '/' || temp == '('){
tempData.push(temp);
}
else if(temp == '#'){
break;
}
else {
cout<<"输入有误!!!"<<endl;
}
cin>>temp;
}
while(tempData.size()){
transData.push_back(tempData.top());
tempData.pop();
}
//cout<<"输出转换后的数据:"<<endl;
//接下来计算
stack<int> result;
int temp1 = 0,temp2 = 0;;
int flag = 1;
int j = 0;
for(int i=0; i<transData.size();){
//cout<<transData[i];
if(transData[i]>='0' && transData[i]<='9'){
while(transData[i+j]>='0'&& transData[i]<='9'){
temp1 += (transData[i+j] - '0')*flag;
flag *= 10;
j++;
}
result.push(temp1);
i = i+j;
j=0;
flag = 1;
temp1 = 0;
continue;
}else if(transData[i]!=' '){
switch(transData[i]){
case'+' : temp1 = result.top();
result.pop();
temp2 = result.top();
result.pop();
result.push(temp1+temp2);
temp1=0;
temp2=0;
break;
case'-' : temp1 = result.top();
result.pop();
temp2 = result.top();
result.pop();
result.push(temp2-temp1);
temp1=0;
temp2=0;
break;
case'*' : temp1 = result.top();
result.pop();
temp2 = result.top();
result.pop();
result.push(temp1*temp2);
temp1=0;
temp2=0;
break;
case'/' : temp1 = result.top();
result.pop();
temp2 = result.top();
result.pop();
result.push(temp2/temp1);
temp1=0;
temp2=0;
break;
}
}
i++;
}
cout<<"计算结果是:"<<endl;
cout<<result.top();
return 0;
}
