lei muban

   #include<iostream>
   using namespace std;
   template
   <typename T>
   class Operator{

       public:
           T add(T a,T b){
               return a + b;
          }
          T minus(T a,T b){
              return a - b;
          }
          T multiply(T a,T b){
              return a*b;
          }
          T divide(T a,T b){
              if(b != ){
                  return a/b;
              }
          }
  };
  int main(){
      Operator<int>op1;
      cout << "op1.add(1,2)=" << op1.add(,) << endl;
      Operator<string>op2;
      cout << "op2.add()=" << op2.add("liuhuaxian&&","yanlele") << endl;
      return ;
  }
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~                                                                             从此