关于主调用函数
1）一般来说，是不是有这两种标准的形式：int main()与int main(int argc,char argv)。恩，那什么时候用到后面那种形式的调用呢？


[解决办法]
一个简单的例子

int main(int argc, char* argv[])
{
if (argc > 2)
{
cout < < "Error, print \ "Startup -help\ " for usage. " < < endl;
return 0;
}

if (argc == 2 && strcmp(argv[1], "-help ") == 0)
{
cout < < "Usage: Startup for starting up test. " < < endl;
cout < < "------------------------------------------- " < < endl;
cout < < "Startup: Start the application. " < < endl;
cout < < "Startup -v: View the version. " < < endl;
cout < < "Startup -d: Start the application in debug mode. " < < endl;
cout < < "Startup -h: Start the application in hide mode. " < < endl;
cout < < "Startup -k: Stop the application running in hide mode. " < < endl;
cout < < "Startup -l: Reload the config when running in hide mode. " < < endl;
return 0;
}

return 0;
}

这样输入Startup -help便会显示提示信息
事实上，还可能有第三个参数，用来配置环境变量的。