编写程序从键盘上输入一些字母和数字，统计显示其中的数字字符的个数和非数字字符个数。

<pre name="code" class="cpp">#include<iostream.h>
int &fun( char cha,int &n,int&c);

void main()
{
int tn(0),int tc(0);
cout<<"Enter characters:";
char ch;
cin>>ch;
while(ch!='#')
{
fun(ch,tn,tc)++;
cin>>ch;
}
cout<<"Number characters:"<<tn<<endl;
cout<<"Other characters:"<<tc<<endl;
}

int &fun(char cha,int &n,int&c)
{
if(cha>='0'&&cha<='9')
return n;
else
return c;
}