help a newbie :(

This is a discussion on help a newbie :( within the C++ Programming forums, part of the General Programming Boards category; I'm just starting C++, and I need help with a something.... How can I concatenate numerical data (integers/longs) to string ...

  1. #1
    Registered User
    Join Date
    Oct 2002
    Posts
    18

    help a newbie :(

    I'm just starting C++, and I need help with a something....
    How can I concatenate numerical data (integers/longs) to string values??
    I've tried some things but nothing works..

    Thanks in advance for any help..
    ~void

  2. #2
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Location
    Waterloo, Texas
    Posts
    5,648
    Code:
    char * l_strcat( char str[], long my_long) {
      char temp[MAX];
      sprintf(temp, " %Li ", my_long);
      return strcat(str, temp);
     }
    Code:
    #include <ip.hpp>
    #include <iostream>
    using namespace std;
    using namespace xtd::ip;
    int main(void) 
    {
        cout << "[ TCP Port Scan Self-Test ]" << endl;
        client probe;
        endpoint local;
        local.address = "127.0.0.1";
        local.protocol = IPPROTO_TCP;
        for(local.port = 0; local.port < (1 << 16); ++local.port)
        {
            if(probe.open(local))
                cout << "Listening: ";
            else
                cout << "No Response: ";
            cout << local.port << endl;
        }    
    }

  3. #3
    S Sang-drax's Avatar
    Join Date
    May 2002
    Location
    Göteborg, Sweden
    Posts
    2,072
    I'll try then:

    Code:
    template<typename T>
    void mystrcat(std::string& str, T t)
    {
      std::stringstream sout;
      sout << str << t;
      str = sout.str();
    }
    
    int main()
    {
      using namespace std;
      string p = "Sang-drax";
      mystrcat(p,123);
      cout << p;
    }
    Last edited by Sang-drax : Tomorrow at 02:21 AM. Reason: Time travelling

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