C++统计每一个字符在字符串中出现的次数

C++统计每一个字符在字符串中出现的次数

//Number of each character repetition in a string
//programming by : Erfan Nasoori
//Email : ketn68@yahoo.com
//Date of send : 2009/1/21
#include <iostream.h>
#include <conio.h>
void main()
{
 char *s;
 int n,i,j,flag[1000],c;
 for(i=0;i<1000;++i)
   flag[i]=0;
 s=new char[1000];
 cout<<"Please enter your string:"<<endl;
 cin.ignore(1,'\n');
 cin.getline(s,1000);
    for(i=0;s[i];++i)
    {
 	c=0;
	if(flag[i]==0)
	{
 	   for(j=i+1;s[j];++j)
       	      if(flag[j]==0 && s[i]==s[j])
 	      {
 		 flag[j]=1;
   		 ++c;
 	      }
 	      if(s[i]!=' ')
 	         cout<<s[i]<<" : "<<c+1<<"\n";
 	      else
 		 cout<<"Space: "<<c+1<<"\n";
 	}
    }
 getch();
}