//-----3 采用文件读取的方法
void Print::Usedfile(string input, string read, string ans)
{
Calculate c;
Scan ss;
//---- 3-1 文件声明及打开;
ifstream in;
ofstream out;
//调用.c_str()接受字符串作为文件名;
in.open (read.c_str(),ios::in );
out.open(ans.c_str() ,ios::out);
//----3-2 文件的读写;
while ( !in.eof() )
{
int flag1 = 0;
input.clear();
getline(in, input, '\n');
double answer = 0;
//---- 3-2-1 判断是否超出十位;
if (ss.IsError() == true)
{
flag1 = 1;
// out << "ERROR" << endl;
}
if (ss.IsError() == false)
{
answer = c.Calculater(input);
//---- 3-2-2 判断除数是否为0;
if (c.iserror() == true )
{
out << "ERROR" << endl;
}
else
{
//---- 3-2-3 输出答案;
if (flag1 == 1)
{
out << "ERROR" << endl;
flag1 = 0;
}
else
{
out << answer << endl;
}
}
}
}
//-----3-3 关闭文件;
in.close() ;
out.close();
}
//--------1 输出表达式;
void Print::PrintStringQueue(string input)
{
/*创建Scan对象s*/
Scan s;
Calculate c;
/*获得Scan里所扫描的队列*/
queue<string> tmp = s.ToStringQueue(input);
//---- 除数为0或超出十位数输ERROR
if (s.IsError() == true )
{
cout << "ERROR" <<endl;
}
else
{
if (c.iserror() == false)
{
/*依次输出符合要求的元素*/
while ( !tmp.empty() )
{
cout << tmp.front() ;
tmp.pop();
}
cout << " " << c.Calculater(input);
}
else
{
cout << "ERROR" << endl;
}
}
}
int main()
{
Scan scan;
Print print;
cin >> input;
scan.ToStringQueue(input);
if (scan.IsError())
{
cout << "Error" << endl;
} else
{
print.PrintQueue(scan.GetQueue());
}
}
//-----2 输出结果;
void Print::Printanswer(string input)
{
Calculate c;
Scan s;
double answer = 0;
answer = c.Calculater(input);
if (s.IsError() == true)
{
cout << "ERROR" << endl;
}
else
{
if (c.iserror() == false)
{
cout << answer << endl;
}
else
{
cout << "ERROR" << endl;
}
}
}