exception.cpp

使用c++简单实现ATM自动提款机

#include<iostream>
#include<string>


double avg(double* b,int len)
{
   double sum=0;
   if(len>6){
         //string s="U I o";
         char s[]=("iiitttt");
         throw s;
         cout<<"123233";
            } 
  
  for(int i=0;i<len;i++)
     sum+=b[i];

  return sum/(double)len;
}

double cal_avg(int len)
{
  const int max=6;
  double b[max]={1.0,2.0,3.0,4.0,5.0,6.0};
  try{
    return avg(b,len);
     }

  catch (char* s){
    cerr<<s<<endl;
    cerr<< "Cal_avg11: Using length default111 of"<<1<<endl;
    return avg(b,2);
   }
}

int main(){

   double t= cal_avg(118);
   
   cout<<t<<endl;
  switch(1){
   case 1: 
     try {
  
      int i;
      cout<<"Please enter an int: ";
      cin>>i;
      if(i<3){
       char s[]=("I is less than 3.");
       throw s;
           }
        }
       catch (char* msg)
       {
       cerr<<msg<<endl;
        }
      break;

    }
cout<<"Please enter an int: ";
 
   return 0;
}