filter chars

#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;
void removeCharsFromString( string &str, char* charsToRemove ) {
   for ( unsigned int i = 0; i < strlen(charsToRemove); ++i ) {
      str.erase( remove(str.begin(), str.end(), charsToRemove[i]), str.end() );
   }
}
//example of usage:

int main() {
    string str("st寒冰的怎dfds么叠5层.");
    removeCharsFromString( str, "么的?,." );
    cout << "Hello World!"<<str;
    return 0;
}