How to make my EXE can accept parameter at the console? - c++

Question

Here is the code that I use to play around with. I want to make this code can accept parameter from the console.
Now I can only run the code with hardcoded parameter. At the console I just type Example1Client.exe and press Enter.
I would like to send parameter like this: Example1Client.exe http://www.website.com
int main()
{
RPC_STATUS status;
unsigned char* szStringBinding = NULL;
// Creates a string binding handle.
// This function is nothing more than a printf.
// Connection is not done here.
status = RpcStringBindingCompose(
NULL, // UUID to bind to.
reinterpret_cast<unsigned char*>("ncacn_ip_tcp"), // Use TCP/IP
// protocol.
reinterpret_cast<unsigned char*>("localhost"), // TCP/IP network
// address to use.
reinterpret_cast<unsigned char*>("4747"), // TCP/IP port to use.
NULL, // Protocol dependent network options to use.
&szStringBinding); // String binding output.
if (status)
exit(status);
// Validates the format of the string binding handle and converts
// it to a binding handle.
// Connection is not done here either.
status = RpcBindingFromStringBinding(
szStringBinding, // The string binding to validate.
&hExample1Binding); // Put the result in the implicit binding
// handle defined in the IDL file.
if (status)
exit(status);
RpcTryExcept
{
visit("http://www.facebook.com");
openNew("http://www.yahoo.com");
}
RpcExcept(1)
{
std::cerr << "Runtime reported exception " << RpcExceptionCode()
<< std::endl;
}
RpcEndExcept
// Free the memory allocated by a string.
status = RpcStringFree(
&szStringBinding); // String to be freed.
if (status)
exit(status);
// Releases binding handle resources and disconnects from the server.
status = RpcBindingFree(
&hExample1Binding); // Frees the implicit binding handle defined in
// the IDL file.
if (status)
exit(status);
}
// Memory allocation function for RPC.
// The runtime uses these two functions for allocating/deallocating
// enough memory to pass the string to the server.
void* __RPC_USER midl_user_allocate(size_t size)
{
return malloc(size);
}
// Memory deallocation function for RPC.
void __RPC_USER midl_user_free(void* p)
{
free(p);
}

Answer 1

Modify definition of your main to: int main(int argc, char *argv[]) instead of int main().
Inside the main then, you can have the code as follows:
std::string url = "some default url";
if (argc > 1) {
url = argv[1];
}
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Passing filename as arguments in C
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