Андрей - подсччерт символов

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#include <iostream>
#include <string>
using namespace std;
string task(string str){
        string newstr = "";
        for(int i=0; i<str.length(); i++){
        char symbol = str[i];
        int count=1;
        if(symbol !=' '){
            for(int j=i+1;j<str.length(); j++){
                if(str[j] == symbol){
                    str[j] = ' ';
                    count++;
                }
            }
            cout<<count<<symbol; // Вместо вывода сделай сбор строки
            //newstr+=count.toStrring() + symbol.toString();
        }
    }
    return newstr;
}
int main()
{
    string str = "NANSANNS";
    task(str);
}