问一下：其中一条语句怎么修改

其实我想让  ch输入为"000000"的时候（输入可能有空格在），输入结束
但是用这种方法输入ch“0000000”是与000000不等的
怎么修改
     
#include <iostream>
#include<cstring>

using namespace std;

int main()
{
    for(char ch[80];cin.getline(ch,80);)
    {

      if(ch=="000000")
      {
        cout<<"equal"<<endl;break;

      }
      strlwr(ch);
      bool op=true;
      for(int i=0;i<strlen(ch)/2;i++)
      {

          if(ch[i]=='{'  && ch[strlen(ch)-1-i]=='}')
             continue;
          if(ch[i]=='<'  && ch[strlen(ch)-1-i]=='>')
             continue;
          if(ch[i]=='('  && ch[strlen(ch)-1-i]==')')
             continue;
          if(ch[i]=='['  && ch[strlen(ch)-1-i]==']')
             continue;
          if(ch[i]=='}'  && ch[strlen(ch)-1-i]=='{')
             continue;
          if(ch[i]=='>'  && ch[strlen(ch)-1-i]=='<')
             continue;
          if(ch[i]==')'  && ch[strlen(ch)-1-i]=='(')
             continue;
          if(ch[i]==']'  && ch[strlen(ch)-1-i]=='[')
             continue;
          if(ch[i]!=ch[strlen(ch)-1-i])
          {

                  op=false;

          }

      }
      if(op==true)
         cout<<"Symmetry"<<endl;
      else
          cout<<"Not symmetry"<<endl;

    }

    return 0;
}