#include<iostream>
#include<string>
#include<cctype>
using namespace std;
bool tranfer(string a,char b[],int &length)
{int leng=a.size();
 int i,j;
 if(isupper(a[0])||a[0]=='_'||a[leng-1]=='_')return false;
 int big=0;
 int lowline=0;
 for(i=0,j=0;i<leng;i++)
 {    if(lowline==1&&big==1)return false;
  
 if(a[i]!='_'&&islower(a[i])){b[j]=a[i];j++;}
		 if(a[i]=='_'){if(a[i+1]=='_')return false;lowline=1;b[j]=toupper(a[i+1]);j++;i++;}
		 if(isupper(a[i])){big=1;b[j]='_';j++;b[j]=tolower(a[i]);j++;}
	 }length=j;
	 return true;
 }
 int main()
 {
 string a;
 while(cin>>a)
 {
 char b[200];
  
  int length;
  if(!tranfer(a,b,length)){cout<<"Error!"<<endl;}
  else {for(int k=0;k<length;k++)cout<<b[k];cout<<endl;}
  }

  return 0;
 }

• Re:要考虑含有数字的情况么? (0) Loonlie 2007-05-30 12:42:18