c – 如何将类型从const char *转换为char *

std::vector <AndroidApplication> AndroidApplication::getAllApp(){
    std::vector<AndroidApplication> allApp;
    std::fstream f;

    f.open("freeApps.txt");
    std::string line;
    if(f.is_open()){
        while(getline(f,linE)) {
            std::string myLine = "";
            char * line2 = line.c_str();
            myLine = strtok(line2,"\t");

            AndroidApplication * tmpApp = new AndroidApplication(myLine[1],myLine[2],myLine[4]);
            tmpApp->Developer = myLine[0];
            tmpApp->Pop = myLine[3];
            tmpApp->Type = myLine[5];
            allApp->pushBACk(tmpApp);
        }
    }
    return allApp;
}

它引发了我的错误：

@H_100_7@myLine = strtok(line2,"\t");

一个错误：

你能告诉我怎么处理它？